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2.1/4x-3=1/2x+12
We move all terms to the left:
2.1/4x-3-(1/2x+12)=0
Domain of the equation: 4x!=0
x!=0/4
x!=0
x∈R
Domain of the equation: 2x+12)!=0We get rid of parentheses
x∈R
2.1/4x-1/2x-12-3=0
We calculate fractions
(2.1*2x)/8x^2+(-4x)/8x^2-12-3=0
We add all the numbers together, and all the variables
(+2.1*2x)/8x^2+(-4x)/8x^2-12-3=0
We add all the numbers together, and all the variables
(+2.1*2x)/8x^2+(-4x)/8x^2-15=0
We multiply all the terms by the denominator
(+2.1*2x)+(-4x)-15*8x^2=0
Wy multiply elements
-120x^2+(+2.1*2x)+(-4x)=0
We get rid of parentheses
-120x^2+2.1*2x-4x=0
We add all the numbers together, and all the variables
-120x^2-4x+2.1*2x=0
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