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3-2/9b=1/6b-1
We move all terms to the left:
3-2/9b-(1/6b-1)=0
Domain of the equation: 9b!=0
b!=0/9
b!=0
b∈R
Domain of the equation: 6b-1)!=0We get rid of parentheses
b∈R
-2/9b-1/6b+1+3=0
We calculate fractions
(-12b)/54b^2+(-9b)/54b^2+1+3=0
We add all the numbers together, and all the variables
(-12b)/54b^2+(-9b)/54b^2+4=0
We multiply all the terms by the denominator
(-12b)+(-9b)+4*54b^2=0
Wy multiply elements
216b^2+(-12b)+(-9b)=0
We get rid of parentheses
216b^2-12b-9b=0
We add all the numbers together, and all the variables
216b^2-21b=0
a = 216; b = -21; c = 0;
Δ = b2-4ac
Δ = -212-4·216·0
Δ = 441
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$b_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$b_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{441}=21$$b_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-21)-21}{2*216}=\frac{0}{432} =0 $$b_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-21)+21}{2*216}=\frac{42}{432} =7/72 $
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