Answer:
A=-4
Step-by-step explanation:
Add 3 to both sides of the equation:
7a-3 = -31
7a -3 +3 = -31 +3
Simplify:
7a = -28
Divide both sides of the equation by the same term:
7a/7 = -28/7
Simplify again:
A= -4
A = -4
