X+(-42)=84

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Solution for X+(-42)=84 equation: 


Simplifying
X + (-42) = 84
X + -42 = 84

Reorder the terms:
-42 + X = 84

Solving
-42 + X = 84

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 = 84 + 42

Combine like terms: -42 + 42 = 0
0 + X = 84 + 42
X = 84 + 42

Combine like terms: 84 + 42 = 126
X = 126

Simplifying
X = 126

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