18=20-2x

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Solution for 18=20-2x equation: 



18=20-2x

We move all terms to the left:

18-(20-2x)=0

We add all the numbers together, and all the variables

-(-2x+20)+18=0

We get rid of parentheses

2x-20+18=0

We add all the numbers together, and all the variables

2x-2=0

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

2x=2

x=2/2

x=1

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