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1/2x+1/4x+21=x
We move all terms to the left:
1/2x+1/4x+21-(x)=0
Domain of the equation: 2x!=0
x!=0/2
x!=0
x∈R
Domain of the equation: 4x!=0We add all the numbers together, and all the variables
x!=0/4
x!=0
x∈R
-1x+1/2x+1/4x+21=0
We calculate fractions
-1x+4x/8x^2+2x/8x^2+21=0
We multiply all the terms by the denominator
-1x*8x^2+4x+2x+21*8x^2=0
We add all the numbers together, and all the variables
6x-1x*8x^2+21*8x^2=0
Wy multiply elements
-8x^3+168x^2+6x=0
We do not support expression: x^3
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