Question

Can someone solve a - 3 over 7 s = -8

and a + 24 = -15

STEP BY STEP PLEASE.

Answer 1

2)a+24=-15

a=-15-24

a=-39

Explanation:

Answer 2

a=-39; s=0.75

Explanation:

Solve the System of Equations by Substitution.

First, solve one of the equations for a variable. I'll do the 2nd one because it only has one variable.

a+24=-15 -------> a=-39

Now we know what a is just plug it back into the other equation and get s.

`(a-3)/(7s) =-8`

`(-39-3)/(7s) =-8`

`(-42)/(7s) =-8`

Switch the -8 and 7s

`(-42)/(-8) =7s`

Simplify the fraction

5.25=7s

Divide by 7 to isolate the s

0.75=s