Question

Solve for a. 3a + 15 = -9

Answer 1

Answer:

-8

Step-by-step explanation:

isolate the 3a by subtracting 15 from 9 which gives you -24 then divided 3a by -24 which gives you -8

Answer 2

Answer:

$\boxed{ \bold{ \huge{ \boxed{ \sf{a = - 8}}}}}$

Step-by-step explanation:

$\sf{3a + 15 = - 9}$

Move 15 to right hand side and change its sign

⇒$\sf{3x = - 9 - 15}$

Calculate

⇒$\sf{3x = - 24}$

Divide both sides by 3

⇒$\sf{ \frac{3x}{3} = \frac{ - 24}{3} }$

Calculate

⇒$\sf{x = - 8}$

Hope I helped!

Best regards! :D