7x-42=x-54

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Solution for 7x-42=x-54 equation: 



7x-42=x-54

We move all terms to the left:

7x-42-(x-54)=0

We get rid of parentheses

7x-x+54-42=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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