x+7=7x-71

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Solution for x+7=7x-71 equation: 



x+7=7x-71

We move all terms to the left:

x+7-(7x-71)=0

We get rid of parentheses

x-7x+71+7=0

We add all the numbers together, and all the variables

-6x+78=0

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

-6x=-78

x=-78/-6

x=+13

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