X+(21)=8

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Solution for X+(21)=8 equation: 


Simplifying
X + (21) = 8
X + 21 = 8

Reorder the terms:
21 + X = 8

Solving
21 + X = 8

Solving for variable 'X'.

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

Add '-21' to each side of the equation.
21 + -21 + X = 8 + -21

Combine like terms: 21 + -21 = 0
0 + X = 8 + -21
X = 8 + -21

Combine like terms: 8 + -21 = -13
X = -13

Simplifying
X = -13

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