Question 792049
10(-2 + 3y) = 70
-20 + 30y = 70
-20 + 20 + 30y = 70 + 20
30y = 90
30y/30 = 90/30
y = 3

check:
10(-2 + 3(3)) = 70
10(-2 + 9) = 70
10(7) = 70 
70 = 70