3b-12=45

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Solution for 3b-12=45 equation: 


Simplifying
3b + -12 = 45

Reorder the terms:
-12 + 3b = 45

Solving
-12 + 3b = 45

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 = 45 + 12

Combine like terms: -12 + 12 = 0
0 + 3b = 45 + 12
3b = 45 + 12

Combine like terms: 45 + 12 = 57
3b = 57

Divide each side by '3'.
b = 19

Simplifying
b = 19

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