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15*x-3*y=9 equation

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Numerical solution:

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The solution

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15*x - 3*y = 9
15x−3y=915 x - 3 y = 9
Simplify
Detail solution
Given the linear equation:
15*x-3*y = 9

Looking for similar summands in the left part:
-3*y + 15*x = 9

Move the summands with the other variables
from left part to right part, we given:
15x=3y+915 x = 3 y + 9
Divide both parts of the equation by 15
x = 9 + 3*y / (15)

We get the answer: x = 3/5 + y/5
The graph
Rapid solution [src] 
     3   re(y)   I*im(y)
x1 = - + ----- + -------
     5     5        5
x1=re⁡(y)5+iim⁡(y)5+35x_{1} = \frac{\operatorname{re}{\left(y\right)}}{5} + \frac{i \operatorname{im}{\left(y\right)}}{5} + \frac{3}{5} 
x1 = re(y)/5 + i*im(y)/5 + 3/5
Sum and product of roots [src] 
sum
3   re(y)   I*im(y)
- + ----- + -------
5     5        5
re⁡(y)5+iim⁡(y)5+35\frac{\operatorname{re}{\left(y\right)}}{5} + \frac{i \operatorname{im}{\left(y\right)}}{5} + \frac{3}{5} 
=
3   re(y)   I*im(y)
- + ----- + -------
5     5        5
re⁡(y)5+iim⁡(y)5+35\frac{\operatorname{re}{\left(y\right)}}{5} + \frac{i \operatorname{im}{\left(y\right)}}{5} + \frac{3}{5} 
product
3   re(y)   I*im(y)
- + ----- + -------
5     5        5
re⁡(y)5+iim⁡(y)5+35\frac{\operatorname{re}{\left(y\right)}}{5} + \frac{i \operatorname{im}{\left(y\right)}}{5} + \frac{3}{5} 
=
3   re(y)   I*im(y)
- + ----- + -------
5     5        5
re⁡(y)5+iim⁡(y)5+35\frac{\operatorname{re}{\left(y\right)}}{5} + \frac{i \operatorname{im}{\left(y\right)}}{5} + \frac{3}{5} 
3/5 + re(y)/5 + i*im(y)/5
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