Question

3s – 12 = -21 Solve for s

Answer 1

Answer:

S= -3

Step-by-step explanation:

3s-12=-21

3s= -21+12

3s= -9

s= -9/3

s= -3

Answer 2

Answer:

s = -3

Step-by-step 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

$\frac{3s}{3} = \frac{ - 9}{3}$

Simplify

$s = - 3$