A+12=42

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Solution for A+12=42 equation: 


Simplifying
A + 12 = 42

Reorder the terms:
12 + A = 42

Solving
12 + A = 42

Solving for variable 'A'.

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

Add '-12' to each side of the equation.
12 + -12 + A = 42 + -12

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

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

Simplifying
A = 30

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