3=13-x

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Solution for 3=13-x equation: 



3=13-x

We move all terms to the left:

3-(13-x)=0

We add all the numbers together, and all the variables

-(-1x+13)+3=0

We get rid of parentheses

1x-13+3=0

We add all the numbers together, and all the variables

x-10=0

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

x=10

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