Question 223370
-3(-4 -6y)+7(-y+5)=-8
12+18Y-7Y+35=-8
11Y=-8-12-35
11Y=-55
Y=-55/11
Y=-5 ans.
Proof:
-3(-4-6*-5)+7(-(-5)+5)=-8
-3(-4+30)+7(+5+5)=-8
-3*26+7*10=-8
-78+70=-8
-8=-8