(9b-9)-2(4b+3)=-7

Solution for (9b-9)-2(4b+3)=-7 equation:

Simplifying
(9b + -9) + -2(4b + 3) = -7

Reorder the terms:
(-9 + 9b) + -2(4b + 3) = -7

Remove parenthesis around (-9 + 9b)
-9 + 9b + -2(4b + 3) = -7

Reorder the terms:
-9 + 9b + -2(3 + 4b) = -7
-9 + 9b + (3 * -2 + 4b * -2) = -7
-9 + 9b + (-6 + -8b) = -7

Reorder the terms:
-9 + -6 + 9b + -8b = -7

Combine like terms: -9 + -6 = -15
-15 + 9b + -8b = -7

Combine like terms: 9b + -8b = 1b
-15 + 1b = -7

Solving
-15 + 1b = -7

Solving for variable 'b'.

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

Add '15' to each side of the equation.
-15 + 15 + 1b = -7 + 15

Combine like terms: -15 + 15 = 0
0 + 1b = -7 + 15
1b = -7 + 15

Combine like terms: -7 + 15 = 8
1b = 8

Divide each side by '1'.
b = 8

Simplifying
b = 8