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3.4/x+2.4/3x=7
We move all terms to the left:
3.4/x+2.4/3x-(7)=0
Domain of the equation: x!=0
x∈R
Domain of the equation: 3x!=0We calculate fractions
x!=0/3
x!=0
x∈R
(3.4*3x)/3x^2+(2.4x)/3x^2-7=0
We add all the numbers together, and all the variables
(+3.4*3x)/3x^2+(+2.4x)/3x^2-7=0
We multiply all the terms by the denominator
(+3.4*3x)+(+2.4x)-7*3x^2=0
Wy multiply elements
-21x^2+(+3.4*3x)+(+2.4x)=0
We get rid of parentheses
-21x^2+3.4*3x+2.4x=0
We add all the numbers together, and all the variables
-21x^2+2.4x+3.4*3x=0
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