-8(11-2.а)+40=3(5а-4)
раскроем скобки
-88+16a+40 = 15a-12
a-36 = 0
a = 36
7(-3(м-2)-м)-12=4(5-3м)-4
-21m+42-7m-12 = 20-12m-4
-16m+14 = 0
16m-14 = 0
16m = 14
m = 14/16
m =0,875
-8(11-2.а)+40=3(5а-4)
раскроем скобки
-88+16a+40 = 15a-12
a-36 = 0
a = 36
7(-3(м-2)-м)-12=4(5-3м)-4
раскроем скобки
-21m+42-7m-12 = 20-12m-4
-16m+14 = 0
16m-14 = 0
16m = 14
m = 14/16
m =0,875