Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation 5^x=8^x
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Equation -27x+220=-5x
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Equation x+12=5
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Equation 3/(x-5)+8/x=2
- Express {x} in terms of y where:
- 12*x+1*y=15
- -16*x-10*y=4
- 10*x-6*y=9
- -20*x+14*y=16
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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