Simplify

99=2 (-7b-3) + 7

b=-7

Step-by-step explanation:

Simplifying

99 = 2 (-7b + - 3) + 7

Reorder the terms:

99 = 2 (-3 + - 7b) + 7

99 = (-3 * 2 + - 7b * 2) + 7

99 = (-6 + - 14b) + 7

Reorder the terms:

99 = - 6 + 7 + - 14b

Combine like terms: - 6 + 7 = 1

99 = 1 + - 14b

Solving

99 = 1 + - 14b

Solving for variable 'b'.

Move all terms containing b to the left, all other terms to the right.

Add '14b' to each side of the equation.

99 + 14b = 1 + - 14b + 14b

Combine like terms: - 14b + 14b = 0

99 + 14b = 1 + 0

99 + 14b = 1

Add '-99' to each side of the equation.

99 + - 99 + 14b = 1 + - 99

Combine like terms: 99 + - 99 = 0

0 + 14b = 1 + - 99

14b = 1 + - 99

Combine like terms: 1 + - 99 = - 98

14b = - 98

Divide each side by '14'.

b = - 7

Simplifying

b = - 7

b = - 7 is the answer