Mister Exam
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How to use it?
- Equation:
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Equation (x+3)^3=81*(x+3)
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- -5*x+9*y=0
- 16*x+2*y=14
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Identical expressions
- eleven :x= thirty-three / forty-eight
- 11:x equally 33 divide by 48
- eleven :x equally thirty minus three divide by forty minus eight
- 11:x=33 divide by 48
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Similar expressions
- 11:(x-9)=-10
- (x-11):(x-6)=11:16
11:x=33/48 equation
The teacher will be very surprised to see your correct solution 😉
The solution
Detail solution
Given the equation:
$$\frac{11}{x} = \frac{11}{16}$$
Use proportions rule:
From a1/b1 = a2/b2 should a1*b2 = a2*b1,
In this case
so we get the equation
$$- \frac{x}{11} = - \frac{16}{11}$$
$$- \frac{x}{11} = - \frac{16}{11}$$
Divide both parts of the equation by -1/11
We get the answer: x = 16
$$\frac{11}{x} = \frac{11}{16}$$
Use proportions rule:
From a1/b1 = a2/b2 should a1*b2 = a2*b1,
In this case
a1 = 1
b1 = -16/11
a2 = 1
b2 = -x/11
so we get the equation
$$- \frac{x}{11} = - \frac{16}{11}$$
$$- \frac{x}{11} = - \frac{16}{11}$$
Divide both parts of the equation by -1/11
x = -16/11 / (-1/11)
We get the answer: x = 16