Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation y•(300:100)=720:9
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Equation ctg(x)=-1
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Equation ctg3x=-√3/3
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Equation (2x-4)(x+7)+40=0
- Express {x} in terms of y where:
- 60x^2y+75x^2y^2+120xy^260x2y+75x2y2+120xy2приx=-0,5x=−0,5,y=0,4y=0,4.
- (x-17)^2+(y+26)^2=16(x−17)2+(y+26)2=16.
- 5*x-5*y=20
- 8*x-7*y=-13
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Identical expressions
- y•(three hundred : one hundred)= seven hundred and twenty : nine
- y•(300:100) equally 720:9
- y•(three hundred : one hundred) equally seven hundred and twenty : nine
- y•300:100=720:9
y•(300:100)=720:9 equation
The teacher will be very surprised to see your correct solution 😉
The solution
Detail solution
Given the linear equation:
Expand brackets in the left part
Divide both parts of the equation by 3
We get the answer: y = 80/3
y*(300/100) = 720/9
Expand brackets in the left part
y300/100 = 720/9
Divide both parts of the equation by 3
y = 80 / (3)
We get the answer: y = 80/3
Sum and product of roots
[src]
sum
80/3
$$\left(\frac{80}{3}\right)$$
=
80/3
$$\frac{80}{3}$$
product
80/3
$$\left(\frac{80}{3}\right)$$
=
80/3
$$\frac{80}{3}$$
The graph