Question

The solution shown for the equation is incorrect. What is the correct​ solution? What is the​ error?

(Check image below for the equation)

What is the​ error?
A. The right side of the equation should be -4 after subtracting -24 from each side.
B. The left side of the equation should be - b after dividing each side by -4.
C. The left side of the equation should be b after distributing.
D. The right side of the equation should be 7 after dividing each side by -4.

Answer 1

The answer is letter b

Answer 2

B = 7

Explanation:

All the answers you listed are wrong. It should be D but the reasoning is wrong. When you distribute the -4 to the expression in the parenthesis you end up with -23 + 4b as a negative times a negative equals a positive. Therefore that's where the error initially lies.