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

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


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

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

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

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

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

Combine like terms: -9 + -8 = -17
-17 + 9b + -8b = -7

Combine like terms: 9b + -8b = 1b
-17 + 1b = -7

Solving
-17 + 1b = -7

Solving for variable 'b'.

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

Add '17' to each side of the equation.
-17 + 17 + 1b = -7 + 17

Combine like terms: -17 + 17 = 0
0 + 1b = -7 + 17
1b = -7 + 17

Combine like terms: -7 + 17 = 10
1b = 10

Divide each side by '1'.
b = 10

Simplifying
b = 10

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