3+x=2x+4

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Solution for 3+x=2x+4 equation: 



3+x=2x+4

We move all terms to the left:

3+x-(2x+4)=0

We get rid of parentheses

x-2x-4+3=0

We add all the numbers together, and all the variables

-1x-1=0

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

-x=1

x=1/-1

x=-1

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