-4=5x-7x

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Solution for -4=5x-7x equation: 



-4=5x-7x

We move all terms to the left:

-4-(5x-7x)=0

We add all the numbers together, and all the variables

-(-2x)-4=0

We get rid of parentheses

2x-4=0

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

2x=4

x=4/2

x=2

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