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8+x/7=-9
We move all terms to the left:
8+x/7-(-9)=0
We add all the numbers together, and all the variables
x/7+17=0
We multiply all the terms by the denominator
x+17*7=0
We add all the numbers together, and all the variables
x+119=0
We move all terms containing x to the left, all other terms to the right
x=-119
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