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8+x.7/2=77
We move all terms to the left:
8+x.7/2-(77)=0
We add all the numbers together, and all the variables
x.7/2-69=0
We multiply all the terms by the denominator
x.7-69*2=0
We add all the numbers together, and all the variables
x.7-138=0
We move all terms containing x to the left, all other terms to the right
x.7=138
x=138/1
x=138
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