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4/x+5=-7
We move all terms to the left:
4/x+5-(-7)=0
Domain of the equation: x!=0We add all the numbers together, and all the variables
x∈R
4/x+12=0
We multiply all the terms by the denominator
12*x+4=0
We add all the numbers together, and all the variables
12x+4=0
We move all terms containing x to the left, all other terms to the right
12x=-4
x=-4/12
x=-1/3
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