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3x-2x+7x=3+4-2
We move all terms to the left:
3x-2x+7x-(3+4-2)=0
We add all the numbers together, and all the variables
3x-2x+7x-5=0
We add all the numbers together, and all the variables
8x-5=0
We move all terms containing x to the left, all other terms to the right
8x=5
x=5/8
x=5/8
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