(9b-7)-2(4b+4)=-5

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Solution for (9b-7)-2(4b+4)=-5 equation:


Simplifying
(9b + -7) + -2(4b + 4) = -5

Reorder the terms:
(-7 + 9b) + -2(4b + 4) = -5

Remove parenthesis around (-7 + 9b)
-7 + 9b + -2(4b + 4) = -5

Reorder the terms:
-7 + 9b + -2(4 + 4b) = -5
-7 + 9b + (4 * -2 + 4b * -2) = -5
-7 + 9b + (-8 + -8b) = -5

Reorder the terms:
-7 + -8 + 9b + -8b = -5

Combine like terms: -7 + -8 = -15
-15 + 9b + -8b = -5

Combine like terms: 9b + -8b = 1b
-15 + 1b = -5

Solving
-15 + 1b = -5

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 = -5 + 15

Combine like terms: -15 + 15 = 0
0 + 1b = -5 + 15
1b = -5 + 15

Combine like terms: -5 + 15 = 10
1b = 10

Divide each side by '1'.
b = 10

Simplifying
b = 10

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