x+x-20=72

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Solution for x+x-20=72 equation:


Simplifying
x + x + -20 = 72

Reorder the terms:
-20 + x + x = 72

Combine like terms: x + x = 2x
-20 + 2x = 72

Solving
-20 + 2x = 72

Solving for variable 'x'.

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

Add '20' to each side of the equation.
-20 + 20 + 2x = 72 + 20

Combine like terms: -20 + 20 = 0
0 + 2x = 72 + 20
2x = 72 + 20

Combine like terms: 72 + 20 = 92
2x = 92

Divide each side by '2'.
x = 46

Simplifying
x = 46

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