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6.5x-9=10.5
We move all terms to the left:
6.5x-9-(10.5)=0
We add all the numbers together, and all the variables
6.5x-19.5=0
We move all terms containing x to the left, all other terms to the right
6.5x=19.5
x=19.5/6.5
x=3
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