Mister Exam
Other calculators
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How to use it?
- Express {x} in terms of y where:
- 15*x-5*y=-5
- 18*x+20*y=-2
- -5*x-6*y=-1
- -17*x-15*y=-17
- Equation:
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Equation x+12=5
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Equation x^3=4
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Equation 0,144:(3,4-x)=2,4
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Equation x^4=(x-56)^2
- Sum of series:
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-8
- Limit of the function:
- -8
- Integral of d{x}:
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-8
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Identical expressions
- twenty *x- nine *y=- eight
- 20 multiply by x minus 9 multiply by y equally minus 8
- twenty multiply by x minus nine multiply by y equally minus eight
- 20x-9y=-8
-
Similar expressions
- 20*x+9*y=-8
- 20*x-9*y=+8
Express x in terms of y where 20*x-9*y=-8
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:
Move the summands with the other variables
from left part to right part, we given:
$$20 x = 9 y - 8$$
Divide both parts of the equation by 20
We get the answer: x = -2/5 + 9*y/20
20*x-9*y = -8
Looking for similar summands in the left part:
-9*y + 20*x = -8
Move the summands with the other variables
from left part to right part, we given:
$$20 x = 9 y - 8$$
Divide both parts of the equation by 20
x = -8 + 9*y / (20)
We get the answer: x = -2/5 + 9*y/20
Rapid solution
[src]
2 9*re(y) 9*I*im(y)
x1 = - - + ------- + ---------
5 20 20
$$x_{1} = \frac{9 \operatorname{re}{\left(y\right)}}{20} + \frac{9 i \operatorname{im}{\left(y\right)}}{20} - \frac{2}{5}$$
x1 = 9*re(y)/20 + 9*i*im(y)/20 - 2/5