7x=x-30

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Solution for 7x=x-30 equation: 



7x=x-30

We move all terms to the left:

7x-(x-30)=0

We get rid of parentheses

7x-x+30=0

We add all the numbers together, and all the variables

6x+30=0

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

6x=-30

x=-30/6

x=-5

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