Question

15 - 5b = -10b - 20​

Answer 1

b = -7

Explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

Answer 2

Explanation:

15 - 5b = -10b - 20

15- 5b +10b = -10b +10b - 20

15 + 5b= -20

15 - 15 + 5b = -20 + -15

5b = -35

b = -7