Tìm x

(x-125):6=140

x×6+160=196

a) `(x-125) : 6 = 140`

` x-125 = 140.6`

` x-125 = 840`

` x = 840+125`

` x = 965`

Vậy `x=965`

b) `x xx6 + 160 = 196`

` x xx 6 = 196 - 160`

` x xx 6 = 36`

` x = 36 : 6`

` x = 6`

Vậy `x=6`