(X+21)=102

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Solution for (X+21)=102 equation: 


Simplifying
(X + 21) = 102

Reorder the terms:
(21 + X) = 102

Remove parenthesis around (21 + X)
21 + X = 102

Solving
21 + X = 102

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 = 102 + -21

Combine like terms: 21 + -21 = 0
0 + X = 102 + -21
X = 102 + -21

Combine like terms: 102 + -21 = 81
X = 81

Simplifying
X = 81

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