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6x/4x=77+2x
We move all terms to the left:
6x/4x-(77+2x)=0
Domain of the equation: 4x!=0We add all the numbers together, and all the variables
x!=0/4
x!=0
x∈R
6x/4x-(2x+77)=0
We get rid of parentheses
6x/4x-2x-77=0
We multiply all the terms by the denominator
6x-2x*4x-77*4x=0
Wy multiply elements
-8x^2+6x-308x=0
We add all the numbers together, and all the variables
-8x^2-302x=0
a = -8; b = -302; c = 0;
Δ = b2-4ac
Δ = -3022-4·(-8)·0
Δ = 91204
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{91204}=302$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-302)-302}{2*-8}=\frac{0}{-16} =0 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-302)+302}{2*-8}=\frac{604}{-16} =-37+3/4 $
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