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-5/6k+7/9=2-9/7k
We move all terms to the left:
-5/6k+7/9-(2-9/7k)=0
Domain of the equation: 6k!=0
k!=0/6
k!=0
k∈R
Domain of the equation: 7k)!=0We add all the numbers together, and all the variables
k!=0/1
k!=0
k∈R
-5/6k-(-9/7k+2)+7/9=0
We get rid of parentheses
-5/6k+9/7k-2+7/9=0
We calculate fractions
2058k^2/3402k^2+(-2835k)/3402k^2+4374k/3402k^2-2=0
We multiply all the terms by the denominator
2058k^2+(-2835k)+4374k-2*3402k^2=0
We add all the numbers together, and all the variables
2058k^2+4374k+(-2835k)-2*3402k^2=0
Wy multiply elements
2058k^2-6804k^2+4374k+(-2835k)=0
We get rid of parentheses
2058k^2-6804k^2+4374k-2835k=0
We add all the numbers together, and all the variables
-4746k^2+1539k=0
a = -4746; b = 1539; c = 0;
Δ = b2-4ac
Δ = 15392-4·(-4746)·0
Δ = 2368521
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$k_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$k_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{2368521}=1539$$k_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(1539)-1539}{2*-4746}=\frac{-3078}{-9492} =513/1582 $$k_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(1539)+1539}{2*-4746}=\frac{0}{-9492} =0 $
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