7x+20=200-2x

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Solution for 7x+20=200-2x equation: 



7x+20=200-2x

We move all terms to the left:

7x+20-(200-2x)=0

We add all the numbers together, and all the variables

7x-(-2x+200)+20=0

We get rid of parentheses

7x+2x-200+20=0

We add all the numbers together, and all the variables

9x-180=0

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

9x=180

x=180/9

x=20

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