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1/7-9x=(8/9+8)
We move all terms to the left:
1/7-9x-((8/9+8))=0
We calculate fractions
-9x+()/()+()/()=0
We add all the numbers together, and all the variables
-9x+2=0
We move all terms containing x to the left, all other terms to the right
-9x=-2
x=-2/-9
x=2/9
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