please help me solve this question:)

Answer:
The answer would be a=2.
Step-by-step explanation:
Since both sides of the equation are being multiplied by b then you would divide both of them by B. This will just remove the B from the equation entirely and leave you with a=2. I hope that this was helpful.
Answer:1.96875
Step-by-step explanation:
If
A=-12/8=-1.5
And
B=-21/16
And if we’re multiplying a and b
Then
A*B=C=1.96875