12.5-x=x-2.5

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Solution for 12.5-x=x-2.5 equation:


Simplifying
12.5 + -1x = x + -2.5

Reorder the terms:
12.5 + -1x = -2.5 + x

Solving
12.5 + -1x = -2.5 + 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.
12.5 + -1x + -1x = -2.5 + x + -1x

Combine like terms: -1x + -1x = -2x
12.5 + -2x = -2.5 + x + -1x

Combine like terms: x + -1x = 0
12.5 + -2x = -2.5 + 0
12.5 + -2x = -2.5

Add '-12.5' to each side of the equation.
12.5 + -12.5 + -2x = -2.5 + -12.5

Combine like terms: 12.5 + -12.5 = 0.0
0.0 + -2x = -2.5 + -12.5
-2x = -2.5 + -12.5

Combine like terms: -2.5 + -12.5 = -15
-2x = -15

Divide each side by '-2'.
x = 7.5

Simplifying
x = 7.5

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