X+(-100)=-80

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Solution for X+(-100)=-80 equation: 


Simplifying
X + (-100) = -80
X + -100 = -80

Reorder the terms:
-100 + X = -80

Solving
-100 + X = -80

Solving for variable 'X'.

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

Add '100' to each side of the equation.
-100 + 100 + X = -80 + 100

Combine like terms: -100 + 100 = 0
0 + X = -80 + 100
X = -80 + 100

Combine like terms: -80 + 100 = 20
X = 20

Simplifying
X = 20

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