10:(x-1)=5

10-16:x=6

2*(3x+5x-x)=28

P.s помогу взаимной

х-1 = 10:5х- 1 = 2х = 3Ответ: 316:х = 10-616:х = 4х = 4Ответ: 46х+10х-2х = 2814х = 28х = 2Ответ: 2

10 : (х-1) = 5Х-1 = 10:5Х-1 = 2Х = 2+1Х = 3 ---------10 - 16:х = 616: х = 10 - 616 : х = 4Х = 16:4Х = 4-----------2• (3х + 5х - х) = 282• 7х = 2814х = 28Х = 28:14Х = 2 ---------