3-x+7=-7

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



3-x+7=-7

We move all terms to the left:

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

We add all the numbers together, and all the variables

-1x+17=0

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

-x=-17

x=-17/-1

x=+17

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