7x+42=x+30

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Solution for 7x+42=x+30 equation: 



7x+42=x+30

We move all terms to the left:

7x+42-(x+30)=0

We get rid of parentheses

7x-x-30+42=0

We add all the numbers together, and all the variables

6x+12=0

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

6x=-12

x=-12/6

x=-2

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