Giúp em vs mng oii

Chiều em nộp bài rồi ạ

`a, (− 3)/8 − x = 5/12`

`x = (− 3)/ 8 − 5/ 12`

`x = (− 19)/ 24`

Vậy `x = (− 19)/ 24`

`b, (− 5)/ 8 + x = (− 3)/ 30 − 1 /6`

`( − 5)/ 8 + x = (− 4)/ 15`

` x = (− 4)/ 15 − (− 5)/ 8`

`x = 43 /120`

Vậy `x = 43 /120`

`c, 2 1/ 4 − 9 1 /4 x = 20`

` 9/ 4 − 37/ 4 x = 20`

`37 /4 x = 9/ 4 − 20`

` 37/ 4 x = − 71/ 4`

` x = (− 71)/ 4 : 37/ 4`

` x =( − 71) /37 `

Vậy `x = (− 71) /37 `

`d , 3/ 4 x − 1/ 2 = 3 /7`

` 3 /4 x = 3/ 7 + 1 /2`

` 3 /4 x = 13 /14`

`x= 13/14:3/4`

Vậy `x = 26 /21 `

`e , (− 1)/ 4 − 3 /4 x = (− 14 )/36`

` 3/ 4 x =( − 1)/ 4 − (− 14) /36`

` 3 /4 x = 5 /36`

` x = 5 /36 : 3 /4 `

` x = 5 /27`

Vậy `x = 5 /27`