Question

-3a - 10 = 20
Solve the following equation

Answer 1

a=- 10

Explanation:

-3a - 10 = 20

+10=+10

you end up with -3a=30

divide by -3 both side

a=-10

Answer 2

a = -10

Explanation:

-3a - 10 = 20

add 10 to both sides:

-3a - 10 + 10 = 20 + 10

-3a = 30

divide both sides by -3:

-3a/-3 = 30/-3

a = -10