20-x=(-2.5)

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Solution for 20-x=(-2.5) equation: 


Simplifying
20 + -1x = (-2.5)
20 + -1x = -2.5

Solving
20 + -1x = -2.5

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 + -1x = -2.5 + -20

Combine like terms: 20 + -20 = 0
0 + -1x = -2.5 + -20
-1x = -2.5 + -20

Combine like terms: -2.5 + -20 = -22.5
-1x = -22.5

Divide each side by '-1'.
x = 22.5

Simplifying
x = 22.5

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