12b+9+2b-b=-87

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Solution for 12b+9+2b-b=-87 equation:


Simplifying
12b + 9 + 2b + -1b = -87

Reorder the terms:
9 + 12b + 2b + -1b = -87

Combine like terms: 12b + 2b = 14b
9 + 14b + -1b = -87

Combine like terms: 14b + -1b = 13b
9 + 13b = -87

Solving
9 + 13b = -87

Solving for variable 'b'.

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

Add '-9' to each side of the equation.
9 + -9 + 13b = -87 + -9

Combine like terms: 9 + -9 = 0
0 + 13b = -87 + -9
13b = -87 + -9

Combine like terms: -87 + -9 = -96
13b = -96

Divide each side by '13'.
b = -7.384615385

Simplifying
b = -7.384615385

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