100-x=x-25

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Solution for 100-x=x-25 equation:


Simplifying
100 + -1x = x + -25

Reorder the terms:
100 + -1x = -25 + x

Solving
100 + -1x = -25 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
100 + -1x + -1x = -25 + x + -1x

Combine like terms: -1x + -1x = -2x
100 + -2x = -25 + x + -1x

Combine like terms: x + -1x = 0
100 + -2x = -25 + 0
100 + -2x = -25

Add '-100' to each side of the equation.
100 + -100 + -2x = -25 + -100

Combine like terms: 100 + -100 = 0
0 + -2x = -25 + -100
-2x = -25 + -100

Combine like terms: -25 + -100 = -125
-2x = -125

Divide each side by '-2'.
x = 62.5

Simplifying
x = 62.5

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