b+b+b+b-2+b-4+b-6+b-8+b-10+b-12=156

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Solution for b+b+b+b-2+b-4+b-6+b-8+b-10+b-12=156 equation:


Simplifying
b + b + b + b + -2 + b + -4 + b + -6 + b + -8 + b + -10 + b + -12 = 156

Reorder the terms:
-2 + -4 + -6 + -8 + -10 + -12 + b + b + b + b + b + b + b + b + b = 156

Combine like terms: -2 + -4 = -6
-6 + -6 + -8 + -10 + -12 + b + b + b + b + b + b + b + b + b = 156

Combine like terms: -6 + -6 = -12
-12 + -8 + -10 + -12 + b + b + b + b + b + b + b + b + b = 156

Combine like terms: -12 + -8 = -20
-20 + -10 + -12 + b + b + b + b + b + b + b + b + b = 156

Combine like terms: -20 + -10 = -30
-30 + -12 + b + b + b + b + b + b + b + b + b = 156

Combine like terms: -30 + -12 = -42
-42 + b + b + b + b + b + b + b + b + b = 156

Combine like terms: b + b = 2b
-42 + 2b + b + b + b + b + b + b + b = 156

Combine like terms: 2b + b = 3b
-42 + 3b + b + b + b + b + b + b = 156

Combine like terms: 3b + b = 4b
-42 + 4b + b + b + b + b + b = 156

Combine like terms: 4b + b = 5b
-42 + 5b + b + b + b + b = 156

Combine like terms: 5b + b = 6b
-42 + 6b + b + b + b = 156

Combine like terms: 6b + b = 7b
-42 + 7b + b + b = 156

Combine like terms: 7b + b = 8b
-42 + 8b + b = 156

Combine like terms: 8b + b = 9b
-42 + 9b = 156

Solving
-42 + 9b = 156

Solving for variable 'b'.

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

Add '42' to each side of the equation.
-42 + 42 + 9b = 156 + 42

Combine like terms: -42 + 42 = 0
0 + 9b = 156 + 42
9b = 156 + 42

Combine like terms: 156 + 42 = 198
9b = 198

Divide each side by '9'.
b = 22

Simplifying
b = 22

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