a) (y+5)-(y-2)-6y
у+5-y+2-6y
7-6y
b) 10 x + 2 (3X - 3)= 12x+ 22
10x+6x-6=12x+22
16x-6=12x+22
16x-12x=22+6
4x=28
x=7
a) (y+5)-(y-2)-6y
у+5-y+2-6y
7-6y
b) 10 x + 2 (3X - 3)= 12x+ 22
10x+6x-6=12x+22
16x-6=12x+22
16x-12x=22+6
4x=28
x=7