3=2x+5x

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Solution for 3=2x+5x equation: 



3=2x+5x

We move all terms to the left:

3-(2x+5x)=0

We add all the numbers together, and all the variables

-(+7x)+3=0

We get rid of parentheses

-7x+3=0

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

-7x=-3

x=-3/-7

x=3/7

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