4-x=2x-7x

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Solution for 4-x=2x-7x equation: 



4-x=2x-7x

We move all terms to the left:

4-x-(2x-7x)=0

We add all the numbers together, and all the variables

-x-(-5x)+4=0

We add all the numbers together, and all the variables

-1x-(-5x)+4=0

We get rid of parentheses

-1x+5x+4=0

We add all the numbers together, and all the variables

4x+4=0

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

4x=-4

x=-4/4

x=-1

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