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90/q=-10
We move all terms to the left:
90/q-(-10)=0
Domain of the equation: q!=0We add all the numbers together, and all the variables
q∈R
90/q+10=0
We multiply all the terms by the denominator
10*q+90=0
We add all the numbers together, and all the variables
10q+90=0
We move all terms containing q to the left, all other terms to the right
10q=-90
q=-90/10
q=-9
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