Mister Exam
Other calculators
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How to use it?
- Express {x} in terms of y where:
- -13*x-7*y=16
- -13*x+7*y=-15
- -9*x+11*y=9
- 9*x+14*y=-10
- Equation:
-
Equation 2x-3(x+3)=-5
-
Equation 5x+12=8x+30
-
Equation 1/x^2-3/x-4=0
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Equation x^2=2x+8
- Sum of series:
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15
- Derivative of:
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15
- Integral of d{x}:
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15
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Identical expressions
- twenty *x+ thirteen *y= fifteen
- 20 multiply by x plus 13 multiply by y equally 15
- twenty multiply by x plus thirteen multiply by y equally fifteen
- 20x+13y=15
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Similar expressions
- 20*x-13*y=15
Express x in terms of y where 20*x+13*y=15
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:
$$20 x = 15 - 13 y$$
Divide both parts of the equation by 20
We get the answer: x = 3/4 - 13*y/20
20*x+13*y = 15
Looking for similar summands in the left part:
13*y + 20*x = 15
Move the summands with the other variables
from left part to right part, we given:
$$20 x = 15 - 13 y$$
Divide both parts of the equation by 20
x = 15 - 13*y / (20)
We get the answer: x = 3/4 - 13*y/20
Rapid solution
[src]
3 13*re(y) 13*I*im(y)
x1 = - - -------- - ----------
4 20 20
$$x_{1} = - \frac{13 \operatorname{re}{\left(y\right)}}{20} - \frac{13 i \operatorname{im}{\left(y\right)}}{20} + \frac{3}{4}$$
x1 = -13*re(y)/20 - 13*i*im(y)/20 + 3/4