Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation 2x^2-x=0
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Equation 3x-1=2x
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Equation -x^2+6*x-7=0
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Equation 7x=-3
- Express {x} in terms of y where:
- 15*x+17*y=-8
- 18*x+9*y=19
- 1*x-5*y=-14
- 5*x+15*y=-8
- Sum of series:
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15
- Integral of d{x}:
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15
- Derivative of:
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15
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Identical expressions
- seven /9y- one /3y= fifteen
- 7 divide by 9y minus 1 divide by 3y equally 15
- seven divide by 9y minus one divide by 3y equally fifteen
- 7 divide by 9y-1 divide by 3y=15
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Similar expressions
- 7/9y+1/3y=15
7/9y-1/3y=15 equation
The teacher will be very surprised to see your correct solution 😉
The solution
Detail solution
Given the linear equation:
Looking for similar summands in the left part:
Divide both parts of the equation by 4/9
We get the answer: y = 135/4
7/9*y-1/3*y = 15
Looking for similar summands in the left part:
4*y/9 = 15
Divide both parts of the equation by 4/9
y = 15 / (4/9)
We get the answer: y = 135/4
Sum and product of roots
[src]
sum
135/4
$$\frac{135}{4}$$
=
135/4
$$\frac{135}{4}$$
product
135/4
$$\frac{135}{4}$$
=
135/4
$$\frac{135}{4}$$
135/4