4=1-x+7

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Solution for 4=1-x+7 equation: 



4=1-x+7

We move all terms to the left:

4-(1-x+7)=0

We add all the numbers together, and all the variables

-(-1x+8)+4=0

We get rid of parentheses

1x-8+4=0

We add all the numbers together, and all the variables

x-4=0

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

x=4

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