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6+3.50x+5.50=51
We move all terms to the left:
6+3.50x+5.50-(51)=0
We add all the numbers together, and all the variables
3.50x-39.5=0
We move all terms containing x to the left, all other terms to the right
3.50x=39.5
x=39.5/3.50
x=11+1/3.50
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