7+3x=x-3

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Solution for 7+3x=x-3 equation: 



7+3x=x-3

We move all terms to the left:

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

We get rid of parentheses

3x-x+3+7=0

We add all the numbers together, and all the variables

2x+10=0

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

2x=-10

x=-10/2

x=-5

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