-5x-20=20-7x

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Solution for -5x-20=20-7x equation: 



-5x-20=20-7x

We move all terms to the left:

-5x-20-(20-7x)=0

We add all the numbers together, and all the variables

-5x-(-7x+20)-20=0

We get rid of parentheses

-5x+7x-20-20=0

We add all the numbers together, and all the variables

2x-40=0

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

2x=40

x=40/2

x=20

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