84=6x+x

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Solution for 84=6x+x equation:



84=6x+x
We move all terms to the left:
84-(6x+x)=0
We add all the numbers together, and all the variables
-(+7x)+84=0
We get rid of parentheses
-7x+84=0
We move all terms containing x to the left, all other terms to the right
-7x=-84
x=-84/-7
x=+12

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