9+7x=3x-4x

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Solution for 9+7x=3x-4x equation: 



9+7x=3x-4x

We move all terms to the left:

9+7x-(3x-4x)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

7x+1x+9=0

We add all the numbers together, and all the variables

8x+9=0

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

8x=-9

x=-9/8

x=-1+1/8

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