-20=-x-x

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Solution for -20=-x-x equation:



-20=-x-x
We move all terms to the left:
-20-(-x-x)=0
We add all the numbers together, and all the variables
-(-2x)-20=0
We get rid of parentheses
2x-20=0
We move all terms containing x to the left, all other terms to the right
2x=20
x=20/2
x=10

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