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2x-9=3+7
We move all terms to the left:
2x-9-(3+7)=0
We add all the numbers together, and all the variables
2x-9-10=0
We add all the numbers together, and all the variables
2x-19=0
We move all terms containing x to the left, all other terms to the right
2x=19
x=19/2
x=9+1/2
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