-12(b+12)=-9(-7b-9)

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Solution for -12(b+12)=-9(-7b-9) equation:


Simplifying
-12(b + 12) = -9(-7b + -9)

Reorder the terms:
-12(12 + b) = -9(-7b + -9)
(12 * -12 + b * -12) = -9(-7b + -9)
(-144 + -12b) = -9(-7b + -9)

Reorder the terms:
-144 + -12b = -9(-9 + -7b)
-144 + -12b = (-9 * -9 + -7b * -9)
-144 + -12b = (81 + 63b)

Solving
-144 + -12b = 81 + 63b

Solving for variable 'b'.

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

Add '-63b' to each side of the equation.
-144 + -12b + -63b = 81 + 63b + -63b

Combine like terms: -12b + -63b = -75b
-144 + -75b = 81 + 63b + -63b

Combine like terms: 63b + -63b = 0
-144 + -75b = 81 + 0
-144 + -75b = 81

Add '144' to each side of the equation.
-144 + 144 + -75b = 81 + 144

Combine like terms: -144 + 144 = 0
0 + -75b = 81 + 144
-75b = 81 + 144

Combine like terms: 81 + 144 = 225
-75b = 225

Divide each side by '-75'.
b = -3

Simplifying
b = -3

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