7x-3x=-9+7

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



7x-3x=-9+7

We move all terms to the left:

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

We add all the numbers together, and all the variables

7x-3x-(-2)=0

We add all the numbers together, and all the variables

4x+2=0

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

4x=-2

x=-2/4

x=-1/2

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