Mister Exam
Other calculators
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How to use it?
- Express {x} in terms of y where:
- -7*x-20*y=-5
- 5*x-6*y=3
- -20*x+17*y=-16
- -8*x-2*y=-15
- Equation:
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Equation sin(x)=cos(x)
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Equation x^3=3
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Equation cos(x)=(-1/2)
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Equation sin(x-1)=0
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Identical expressions
- fifteen *x+ eight *y= nine
- 15 multiply by x plus 8 multiply by y equally 9
- fifteen multiply by x plus eight multiply by y equally nine
- 15x+8y=9
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Similar expressions
- 15*x-8*y=9
Express x in terms of y where 15*x+8*y=9
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:
$$15 x = 9 - 8 y$$
Divide both parts of the equation by 15
We get the answer: x = 3/5 - 8*y/15
15*x+8*y = 9
Looking for similar summands in the left part:
8*y + 15*x = 9
Move the summands with the other variables
from left part to right part, we given:
$$15 x = 9 - 8 y$$
Divide both parts of the equation by 15
x = 9 - 8*y / (15)
We get the answer: x = 3/5 - 8*y/15
Rapid solution
[src]
3 8*re(y) 8*I*im(y)
x1 = - - ------- - ---------
5 15 15
$$x_{1} = - \frac{8 \operatorname{re}{\left(y\right)}}{15} - \frac{8 i \operatorname{im}{\left(y\right)}}{15} + \frac{3}{5}$$
x1 = -8*re(y)/15 - 8*i*im(y)/15 + 3/5