Mister Exam
Other calculators
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How to use it?
- Express {x} in terms of y where:
- 18*x+12*y=18
- -11*x-3*y=14
- -17*x+2*y=-4
- -4*x-8*y=-20
- Equation:
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Equation (x-4)^2-x^2=0
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Equation x^2+3x=4
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Equation x*(x^2+8*x+16)=5*(x+4)
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Equation -x^2+4x+3=x^2-x-(1+2x^2)
- 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 minus 13 multiply by y equally 15
- twenty multiply by x minus 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:
$$20 x = 13 y + 15$$
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:
$$20 x = 13 y + 15$$
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