9x+7=20-x

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Solution for 9x+7=20-x equation: 



9x+7=20-x

We move all terms to the left:

9x+7-(20-x)=0

We add all the numbers together, and all the variables

9x-(-1x+20)+7=0

We get rid of parentheses

9x+1x-20+7=0

We add all the numbers together, and all the variables

10x-13=0

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

10x=13

x=13/10

x=1+3/10

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