Question

Simplify: 3ab-9ab+7ab Solve: A- 2(5x-3)=24 B- 5(2x+1)=50

Answer 1

3ab-9ab+7ab = ab

A-
2(5x-3)=24
10x - 6 = 24
10x = 30
x = 3

B-
5(2x+1)=50
10x + 5 = 50
10x = 45
    x = 4.5

Answer 2

3ab - 9ab + 7ab
ab << the answer

2(5x - 3) = 24
10x - 6 = 24
10x = 24 + 6
10x = 30
x = 3  <<< the answer

5(2x + 1) = 50
10x + 5 = 50
10x = 50 - 5
10x = 45
x = 45/10
x = 9/2    << the answer

hope this helps, God bless!