3x=5x+84

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Solution for 3x=5x+84 equation: 



3x=5x+84

We move all terms to the left:

3x-(5x+84)=0

We get rid of parentheses

3x-5x-84=0

We add all the numbers together, and all the variables

-2x-84=0

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

-2x=84

x=84/-2

x=-42

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