1+2x+3=7+x

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Solution for 1+2x+3=7+x equation: 



1+2x+3=7+x

We move all terms to the left:

1+2x+3-(7+x)=0

We add all the numbers together, and all the variables

2x-(x+7)+1+3=0

We add all the numbers together, and all the variables

2x-(x+7)+4=0

We get rid of parentheses

2x-x-7+4=0

We add all the numbers together, and all the variables

x-3=0

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

x=3

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