42+x=51

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Solution for 42+x=51 equation: 


Simplifying
42 + x = 51

Solving
42 + x = 51

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 = 51 + -42

Combine like terms: 42 + -42 = 0
0 + x = 51 + -42
x = 51 + -42

Combine like terms: 51 + -42 = 9
x = 9

Simplifying
x = 9

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