x+x-18=126

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Solution for x+x-18=126 equation:


Simplifying
x + x + -18 = 126

Reorder the terms:
-18 + x + x = 126

Combine like terms: x + x = 2x
-18 + 2x = 126

Solving
-18 + 2x = 126

Solving for variable 'x'.

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

Add '18' to each side of the equation.
-18 + 18 + 2x = 126 + 18

Combine like terms: -18 + 18 = 0
0 + 2x = 126 + 18
2x = 126 + 18

Combine like terms: 126 + 18 = 144
2x = 144

Divide each side by '2'.
x = 72

Simplifying
x = 72

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