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15/x=39/13
We move all terms to the left:
15/x-(39/13)=0
Domain of the equation: x!=0We add all the numbers together, and all the variables
x∈R
15/x-3=0
We multiply all the terms by the denominator
-3*x+15=0
We add all the numbers together, and all the variables
-3x+15=0
We move all terms containing x to the left, all other terms to the right
-3x=-15
x=-15/-3
x=+5
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