biết 1ab+36=ab1 thì:
a) a=5,b=1
b ) a=4,b=5
c) a=1,b=5
d) a=5,b=4 câu hỏi 3003427 - hoidap247.com

Question

biết 1ab+36=ab1 thì:
a) a=5,b=1 
b ) a=4,b=5
c) a=1,b=5
d) a=5,b=4

Mina0607 · Answer

Đáp án+Giải thích các bước giải:
 `1ab+36=ab1`
`=>100+ab+36=10ab+1`
`=>136+ab=10ab+1`
`=>136=9ab+1`
`=>9ab=136-1`
`=>9ab=135`
`=>ab=15`
`=>a=1;b=5`
`=>` Chọn đáp án `C`

BaoPDG · Answer

Đáp án:
c) a=1,b=5
Giải thích các bước giải:
1ab&#x00AF;+36=ab1&#x00AF;" role="presentation" style="box-sizing: border-box; margin: 0px; padding: 1px 0px; overflow-wrap: normal; word-break: break-word; display: inline-block; line-height: 0; text-indent: 0px; text-align: left; text-transform: none; font-style: normal; font-weight: normal; font-size: 18.08px; letter-spacing: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;" tabindex="0">1ab+36=ab1
&#x21D2;100+ab&#x00AF;+36=10.ab&#x00AF;+1" role="presentation" style="box-sizing: border-box; margin: 0px; padding: 1px 0px; overflow-wrap: normal; word-break: break-word; display: inline-block; line-height: 0; text-indent: 0px; text-align: left; text-transform: none; font-style: normal; font-weight: normal; font-size: 18.08px; letter-spacing: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;" tabindex="0">⇒100+ab+36=10.ab+1
&#x21D2;136+ab&#x00AF;=10.ab&#x00AF;+1" role="presentation" style="box-sizing: border-box; margin: 0px; padding: 1px 0px; overflow-wrap: normal; word-break: break-word; display: inline-block; line-height: 0; text-indent: 0px; text-align: left; text-transform: none; font-style: normal; font-weight: normal; font-size: 18.08px; letter-spacing: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;" tabindex="0">⇒136+b=10.ab+1
&#x21D2;136&#x2212;1=10.ab&#x00AF;&#x2212;ab&#x00AF;" role="presentation" style="box-sizing: border-box; margin: 0px; padding: 1px 0px; overflow-wrap: normal; word-break: break-word; display: inline-block; line-height: 0; text-indent: 0px; text-align: left; text-transform: none; font-style: normal; font-weight: normal; font-size: 18.08px; letter-spacing: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;" tabindex="0">⇒136−1=10.ab−ab
&#x21D2;135=9.ab&#x00AF;" role="presentation" style="box-sizing: border-box; margin: 0px; padding: 1px 0px; overflow-wrap: normal; word-break: break-word; display: inline-block; line-height: 0; text-indent: 0px; text-align: left; text-transform: none; font-style: normal; font-weight: normal; font-size: 18.08px; letter-spacing: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;" tabindex="0">⇒135=9.ab
&#x21D2;ab&#x00AF;=15" role="presentation" style="box-sizing: border-box; margin: 0px; padding: 1px 0px; overflow-wrap: normal; word-break: break-word; display: inline-block; line-height: 0; text-indent: 0px; text-align: left; text-transform: none; font-style: normal; font-weight: normal; font-size: 18.08px; letter-spacing: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;" tabindex="0">⇒ab=15 
&#x21D2;ab&#x00AF;=15" role="presentation" style="box-sizing: border-box; margin: 0px; padding: 1px 0px; overflow-wrap: normal; word-break: break-word; display: inline-block; line-height: 0; text-indent: 0px; text-align: left; text-transform: none; font-style: normal; font-weight: normal; font-size: 18.08px; letter-spacing: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;" tabindex="0">⇒a=1;b=5
&#x21D2;ab&#x00AF;=15" role="presentation" style="box-sizing: border-box; margin: 0px; padding: 1px 0px; overflow-wrap: normal; word-break: break-word; display: inline-block; line-height: 0; text-indent: 0px; text-align: left; text-transform: none; font-style: normal; font-weight: normal; font-size: 18.08px; letter-spacing: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;" tabindex="0"> chọn c)

biết 1ab+36=ab1 thì: a) a=5,b=1 b ) a=4,b=5 c) a=1,b=5 d) a=5,b=4

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biết 1ab+36=ab1 thì: a) a=5,b=1 b ) a=4,b=5 c) a=1,b=5 d) a=5,b=4

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