(x+3=7)

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Solution for (x+3=7) equation: 



(x+3=7)

We move all terms to the left:

(x+3-(7))=0

We add all the numbers together, and all the variables

(x-4)=0

We get rid of parentheses

x-4=0

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

x=4

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