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126/x=7
We move all terms to the left:
126/x-(7)=0
Domain of the equation: x!=0We multiply all the terms by the denominator
x∈R
-7*x+126=0
We add all the numbers together, and all the variables
-7x+126=0
We move all terms containing x to the left, all other terms to the right
-7x=-126
x=-126/-7
x=+18
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