Answer:
B = -2
Explanation:
Simplifying
6(7b + 4) = -60
Reorder the terms:
6(4 + 7b) = -60
(4 * 6 + 7b * 6) = -60
(24 + 42b) = -60
Solving
24 + 42b = -60
Solving for variable 'b'.
Move all terms containing b to the left, all other terms to the right.
Add '-24' to each side of the equation.
24 + -24 + 42b = -60 + -24
Combine like terms: 24 + -24 = 0
0 + 42b = -60 + -24
42b = -60 + -24
Combine like terms: -60 + -24 = -84
42b = -84
Divide each side by '42'.
b = -2
Simplifying
b = -2