3b-12=

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Solution for 3b-12= equation: 


Simplifying
3b + -12 = 0

Reorder the terms:
-12 + 3b = 0

Solving
-12 + 3b = 0

Solving for variable 'b'.

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

Add '12' to each side of the equation.
-12 + 12 + 3b = 0 + 12

Combine like terms: -12 + 12 = 0
0 + 3b = 0 + 12
3b = 0 + 12

Combine like terms: 0 + 12 = 12
3b = 12

Divide each side by '3'.
b = 4

Simplifying
b = 4

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