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2*x+y=3 equation

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Numerical solution:

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The solution

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2*x + y = 3
$$2 x + y = 3$$
Detail solution
Given the linear equation:
2*x+y = 3

Looking for similar summands in the left part:
y + 2*x = 3

Move the summands with the other variables
from left part to right part, we given:
$$2 x = 3 - y$$
Divide both parts of the equation by 2
x = 3 - y / (2)

We get the answer: x = 3/2 - y/2
The graph
Sum and product of roots [src]
sum
3   re(y)   I*im(y)
- - ----- - -------
2     2        2   
$$- \frac{\operatorname{re}{\left(y\right)}}{2} - \frac{i \operatorname{im}{\left(y\right)}}{2} + \frac{3}{2}$$
=
3   re(y)   I*im(y)
- - ----- - -------
2     2        2   
$$- \frac{\operatorname{re}{\left(y\right)}}{2} - \frac{i \operatorname{im}{\left(y\right)}}{2} + \frac{3}{2}$$
product
3   re(y)   I*im(y)
- - ----- - -------
2     2        2   
$$- \frac{\operatorname{re}{\left(y\right)}}{2} - \frac{i \operatorname{im}{\left(y\right)}}{2} + \frac{3}{2}$$
=
3   re(y)   I*im(y)
- - ----- - -------
2     2        2   
$$- \frac{\operatorname{re}{\left(y\right)}}{2} - \frac{i \operatorname{im}{\left(y\right)}}{2} + \frac{3}{2}$$
3/2 - re(y)/2 - i*im(y)/2
Rapid solution [src]
     3   re(y)   I*im(y)
x1 = - - ----- - -------
     2     2        2   
$$x_{1} = - \frac{\operatorname{re}{\left(y\right)}}{2} - \frac{i \operatorname{im}{\left(y\right)}}{2} + \frac{3}{2}$$
x1 = -re(y)/2 - i*im(y)/2 + 3/2