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2/3z+9=34-3/4z
We move all terms to the left:
2/3z+9-(34-3/4z)=0
Domain of the equation: 3z!=0
z!=0/3
z!=0
z∈R
Domain of the equation: 4z)!=0We add all the numbers together, and all the variables
z!=0/1
z!=0
z∈R
2/3z-(-3/4z+34)+9=0
We get rid of parentheses
2/3z+3/4z-34+9=0
We calculate fractions
8z/12z^2+9z/12z^2-34+9=0
We add all the numbers together, and all the variables
8z/12z^2+9z/12z^2-25=0
We multiply all the terms by the denominator
8z+9z-25*12z^2=0
We add all the numbers together, and all the variables
17z-25*12z^2=0
Wy multiply elements
-300z^2+17z=0
a = -300; b = 17; c = 0;
Δ = b2-4ac
Δ = 172-4·(-300)·0
Δ = 289
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$z_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$z_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{289}=17$$z_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(17)-17}{2*-300}=\frac{-34}{-600} =17/300 $$z_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(17)+17}{2*-300}=\frac{0}{-600} =0 $
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