Mister Exam
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How to use it?
- Equation:
-
Equation 5-2*(x-1)=4-x
- Equation k^2+1=0
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Equation cos(x)=4/7
- Equation 228:x=12
- Express {x} in terms of y where:
- 20*x-8*y=13
- -10*x+18*y=6
- 4*x-7*y=4
- 7*x-17*y=-7
- Integral of d{x}:
-
12
- Canonical form:
- 12
- Derivative of:
- 12
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Identical expressions
- two hundred and twenty-eight :x= twelve
- 228:x equally 12
- two hundred and twenty minus eight :x equally twelve
-
Similar expressions
- 10^x-5^x-1*2^x-2=950
228:x=12 equation
The teacher will be very surprised to see your correct solution 😉
The solution
Detail solution
Given the equation:
$$\frac{228}{x} = 12$$
Use proportions rule:
From a1/b1 = a2/b2 should a1*b2 = a2*b1,
In this case
so we get the equation
$$- \frac{x}{228} = - \frac{1}{12}$$
$$- \frac{x}{228} = - \frac{1}{12}$$
Divide both parts of the equation by -1/228
We get the answer: x = 19
$$\frac{228}{x} = 12$$
Use proportions rule:
From a1/b1 = a2/b2 should a1*b2 = a2*b1,
In this case
a1 = 1
b1 = -1/12
a2 = 1
b2 = -x/228
so we get the equation
$$- \frac{x}{228} = - \frac{1}{12}$$
$$- \frac{x}{228} = - \frac{1}{12}$$
Divide both parts of the equation by -1/228
x = -1/12 / (-1/228)
We get the answer: x = 19