12+b=42

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Solution for 12+b=42 equation: 


Simplifying
12 + b = 42

Solving
12 + b = 42

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 + b = 42 + -12

Combine like terms: 12 + -12 = 0
0 + b = 42 + -12
b = 42 + -12

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

Simplifying
b = 30

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