3x+7-x=4

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



3x+7-x=4

We move all terms to the left:

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

We add all the numbers together, and all the variables

2x+3=0

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

2x=-3

x=-3/2

x=-1+1/2

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