-7=-x-4

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Solution for -7=-x-4 equation: 



-7=-x-4

We move all terms to the left:

-7-(-x-4)=0

We add all the numbers together, and all the variables

-(-1x-4)-7=0

We get rid of parentheses

1x+4-7=0

We add all the numbers together, and all the variables

x-3=0

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

x=3

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