-20(20+-x)=800

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Solution for -20(20+-x)=800 equation: 


Simplifying
-20(20 + -1x) = 800
(20 * -20 + -1x * -20) = 800
(-400 + 20x) = 800

Solving
-400 + 20x = 800

Solving for variable 'x'.

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

Add '400' to each side of the equation.
-400 + 400 + 20x = 800 + 400

Combine like terms: -400 + 400 = 0
0 + 20x = 800 + 400
20x = 800 + 400

Combine like terms: 800 + 400 = 1200
20x = 1200

Divide each side by '20'.
x = 60

Simplifying
x = 60

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