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7x-1=77.5
We move all terms to the left:
7x-1-(77.5)=0
We add all the numbers together, and all the variables
7x-78.5=0
We move all terms containing x to the left, all other terms to the right
7x=78.5
x=78.5/7
x=11+1/4.6666666666667
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