(X+18)+(x-20)=90

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Solution for (X+18)+(x-20)=90 equation:


Simplifying
(X + 18) + (x + -20) = 90

Reorder the terms:
(18 + X) + (x + -20) = 90

Remove parenthesis around (18 + X)
18 + X + (x + -20) = 90

Reorder the terms:
18 + X + (-20 + x) = 90

Remove parenthesis around (-20 + x)
18 + X + -20 + x = 90

Reorder the terms:
18 + -20 + X + x = 90

Combine like terms: 18 + -20 = -2
-2 + X + x = 90

Solving
-2 + X + x = 90

Solving for variable 'X'.

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

Add '2' to each side of the equation.
-2 + X + 2 + x = 90 + 2

Reorder the terms:
-2 + 2 + X + x = 90 + 2

Combine like terms: -2 + 2 = 0
0 + X + x = 90 + 2
X + x = 90 + 2

Combine like terms: 90 + 2 = 92
X + x = 92

Add '-1x' to each side of the equation.
X + x + -1x = 92 + -1x

Combine like terms: x + -1x = 0
X + 0 = 92 + -1x
X = 92 + -1x

Simplifying
X = 92 + -1x

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