-x=100-20x

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Solution for -x=100-20x equation: 


Simplifying
-1x = 100 + -20x

Solving
-1x = 100 + -20x

Solving for variable 'x'.

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

Add '20x' to each side of the equation.
-1x + 20x = 100 + -20x + 20x

Combine like terms: -1x + 20x = 19x
19x = 100 + -20x + 20x

Combine like terms: -20x + 20x = 0
19x = 100 + 0
19x = 100

Divide each side by '19'.
x = 5.263157895

Simplifying
x = 5.263157895

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