x-7=10x+20

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Solution for x-7=10x+20 equation: 



x-7=10x+20

We move all terms to the left:

x-7-(10x+20)=0

We get rid of parentheses

x-10x-20-7=0

We add all the numbers together, and all the variables

-9x-27=0

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

-9x=27

x=27/-9

x=-3

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