Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation k^2+2*k=0
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Equation 11-x=31
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Equation 6*x^2=0
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Equation x^2-22*x+121=0
- Express {x} in terms of y where:
- 13*x+14*y=5
- -12*x-18*y=-16
- 18*x+5*y=-18
- 7*x+11*y=18
- Least common denominator:
- x/3-x/5
- Limit of the function:
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21
- Sum of series:
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21
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Identical expressions
- x/ three -x/ five = twenty-one
- x divide by 3 minus x divide by 5 equally 21
- x divide by three minus x divide by five equally twenty minus one
- x divide by 3-x divide by 5=21
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Similar expressions
- cosx*cosx+(x-Pi/2)^(1/2)*cosx+(x-Pi/2)^(1/2)=0
- x/3+x/5=21
x/3-x/5=21 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 2/15
We get the answer: x = 315/2
x/3-x/5 = 21
Looking for similar summands in the left part:
2*x/15 = 21
Divide both parts of the equation by 2/15
x = 21 / (2/15)
We get the answer: x = 315/2
Sum and product of roots
[src]
sum
315/2
$$\frac{315}{2}$$
=
315/2
$$\frac{315}{2}$$
product
315/2
$$\frac{315}{2}$$
=
315/2
$$\frac{315}{2}$$
315/2