X-(-8)=20

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Solution for X-(-8)=20 equation: 


Simplifying
X + -1(-8) = 20

Multiply -1 * -8
X + 8 = 20

Reorder the terms:
8 + X = 20

Solving
8 + X = 20

Solving for variable 'X'.

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

Add '-8' to each side of the equation.
8 + -8 + X = 20 + -8

Combine like terms: 8 + -8 = 0
0 + X = 20 + -8
X = 20 + -8

Combine like terms: 20 + -8 = 12
X = 12

Simplifying
X = 12

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