x+x-25=90

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Solution for x+x-25=90 equation:


Simplifying
x + x + -25 = 90

Reorder the terms:
-25 + x + x = 90

Combine like terms: x + x = 2x
-25 + 2x = 90

Solving
-25 + 2x = 90

Solving for variable 'x'.

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

Add '25' to each side of the equation.
-25 + 25 + 2x = 90 + 25

Combine like terms: -25 + 25 = 0
0 + 2x = 90 + 25
2x = 90 + 25

Combine like terms: 90 + 25 = 115
2x = 115

Divide each side by '2'.
x = 57.5

Simplifying
x = 57.5

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