42+x=55

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Solution for 42+x=55 equation: 


Simplifying
42 + x = 55

Solving
42 + x = 55

Solving for variable 'x'.

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

Add '-42' to each side of the equation.
42 + -42 + x = 55 + -42

Combine like terms: 42 + -42 = 0
0 + x = 55 + -42
x = 55 + -42

Combine like terms: 55 + -42 = 13
x = 13

Simplifying
x = 13

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