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9x/4-7x/4=8
We move all terms to the left:
9x/4-7x/4-(8)=0
We multiply all the terms by the denominator
9x-7x-8*4=0
We add all the numbers together, and all the variables
2x-32=0
We move all terms containing x to the left, all other terms to the right
2x=32
x=32/2
x=16
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