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

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


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

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

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

Solving
-9 + 12b + 1n = -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 + 12b + 9 + 1n = -87 + 9

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

Combine like terms: -9 + 9 = 0
0 + 12b + 1n = -87 + 9
12b + 1n = -87 + 9

Combine like terms: -87 + 9 = -78
12b + 1n = -78

Add '-1n' to each side of the equation.
12b + 1n + -1n = -78 + -1n

Combine like terms: 1n + -1n = 0
12b + 0 = -78 + -1n
12b = -78 + -1n

Divide each side by '12'.
b = -6.5 + -0.08333333333n

Simplifying
b = -6.5 + -0.08333333333n

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