-9=5x-7x-1

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Solution for -9=5x-7x-1 equation: 



-9=5x-7x-1

We move all terms to the left:

-9-(5x-7x-1)=0

We add all the numbers together, and all the variables

-(-2x-1)-9=0

We get rid of parentheses

2x+1-9=0

We add all the numbers together, and all the variables

2x-8=0

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

2x=8

x=8/2

x=4

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