10-7x=x+26
10-26=x+7x
-16=8x
x=-2
2-3 (2х+5)= (3х-15)-6
2-6х-15=3х-15-6
2-6х=3х-6
-6х-3х=-6-2
-9х=-8
х=8/9
-8х=16 | : (-8)
Х=-2
б) 2-6х-15=3х-15-6
-6х-3х=-15-6-2+15
-9х=-8 | : (-9)
Х=8/9
10-7x=x+26
10-26=x+7x
-16=8x
x=-2
2-3 (2х+5)= (3х-15)-6
2-6х-15=3х-15-6
2-6х=3х-6
-6х-3х=-6-2
-9х=-8
х=8/9