x=72-7x

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Solution for x=72-7x equation: 



x=72-7x

We move all terms to the left:

x-(72-7x)=0

We add all the numbers together, and all the variables

x-(-7x+72)=0

We get rid of parentheses

x+7x-72=0

We add all the numbers together, and all the variables

8x-72=0

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

8x=72

x=72/8

x=9

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