Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation sin(x)=4
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Equation 5^x=125
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Equation (|x+4|)=5
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Equation 2*sin(x)=1
- Express {x} in terms of y where:
- 16*x-17*y=-15
- -4*x-4*y=19
- 15*x+1*y=19
- -5*x-2*y=9
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Identical expressions
- (x/ four)+(x/ five)= one
- (x divide by 4) plus (x divide by 5) equally 1
- (x divide by four) plus (x divide by five) equally one
- x/4+x/5=1
- (x divide by 4)+(x divide by 5)=1
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Similar expressions
- x/3+x/4+x/5+52=x
- (x/4)-(x/5)=1
- x/(x/4+x/5+x/6)=0
(x/4)+(x/5)=1 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
Looking for similar summands in the left part:
Divide both parts of the equation by 9/20
We get the answer: x = 20/9
(x/4)+(x/5) = 1
Expand brackets in the left part
x/4+x/5 = 1
Looking for similar summands in the left part:
9*x/20 = 1
Divide both parts of the equation by 9/20
x = 1 / (9/20)
We get the answer: x = 20/9
Sum and product of roots
[src]
sum
20/9
$$\frac{20}{9}$$
=
20/9
$$\frac{20}{9}$$
product
20/9
$$\frac{20}{9}$$
=
20/9
$$\frac{20}{9}$$
20/9