18-(-x)=20

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Solution for 18-(-x)=20 equation: 



18-(-x)=20

We move all terms to the left:

18-(-x)-(20)=0

We add all the numbers together, and all the variables

-(-1x)+18-20=0

We add all the numbers together, and all the variables

-(-1x)-2=0

We get rid of parentheses

1x-2=0

We add all the numbers together, and all the variables

x-2=0

We move all terms containing x to the left, all other terms to the right

x=2

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