3b=12+-1b

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Solution for 3b=12+-1b equation: 


Simplifying
3b = 12 + -1b

Solving
3b = 12 + -1b

Solving for variable 'b'.

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

Add 'b' to each side of the equation.
3b + b = 12 + -1b + b

Combine like terms: 3b + b = 4b
4b = 12 + -1b + b

Combine like terms: -1b + b = 0
4b = 12 + 0
4b = 12

Divide each side by '4'.
b = 3

Simplifying
b = 3

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