(X+3)+(x+8)=90

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Solution for (X+3)+(x+8)=90 equation:


Simplifying
(X + 3) + (x + 8) = 90

Reorder the terms:
(3 + X) + (x + 8) = 90

Remove parenthesis around (3 + X)
3 + X + (x + 8) = 90

Reorder the terms:
3 + X + (8 + x) = 90

Remove parenthesis around (8 + x)
3 + X + 8 + x = 90

Reorder the terms:
3 + 8 + X + x = 90

Combine like terms: 3 + 8 = 11
11 + X + x = 90

Solving
11 + X + x = 90

Solving for variable 'X'.

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

Add '-11' to each side of the equation.
11 + X + -11 + x = 90 + -11

Reorder the terms:
11 + -11 + X + x = 90 + -11

Combine like terms: 11 + -11 = 0
0 + X + x = 90 + -11
X + x = 90 + -11

Combine like terms: 90 + -11 = 79
X + x = 79

Add '-1x' to each side of the equation.
X + x + -1x = 79 + -1x

Combine like terms: x + -1x = 0
X + 0 = 79 + -1x
X = 79 + -1x

Simplifying
X = 79 + -1x

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