Question

3s – 12 = -21
Solve for s

Answer 1

s = -3

Explanation:

`3s - 12 = - 21`

Collect like terms

`3s = - 21 + 12`

Add the numbers :

`- 21 + 12 = - 9 \\ \\ 3s = - 9`

Divide both sides of the equation by 3

`(3s)/(3) = ( - 9)/(3)`

Simplify

`s = - 3`

Answer 2

S= -3

Explanation:

3s-12=-21

3s= -21+12

3s= -9

s= -9/3

s= -3