x+78=120

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Solution for x+78=120 equation: 


Simplifying
x + 78 = 120

Reorder the terms:
78 + x = 120

Solving
78 + x = 120

Solving for variable 'x'.

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

Add '-78' to each side of the equation.
78 + -78 + x = 120 + -78

Combine like terms: 78 + -78 = 0
0 + x = 120 + -78
x = 120 + -78

Combine like terms: 120 + -78 = 42
x = 42

Simplifying
x = 42

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