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x+y=7 equation

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Numerical solution:

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The solution

You have entered [src]
x + y = 7
$$x + y = 7$$
Detail solution
Given the linear equation:
x+y = 7

Looking for similar summands in the left part:
x + y = 7

Move the summands with the other variables
from left part to right part, we given:
$$x = 7 - y$$
We get the answer: x = 7 - y
The graph
Rapid solution [src]
x1 = 7 - re(y) - I*im(y)
$$x_{1} = - \operatorname{re}{\left(y\right)} - i \operatorname{im}{\left(y\right)} + 7$$
x1 = -re(y) - i*im(y) + 7
Sum and product of roots [src]
sum
7 - re(y) - I*im(y)
$$- \operatorname{re}{\left(y\right)} - i \operatorname{im}{\left(y\right)} + 7$$
=
7 - re(y) - I*im(y)
$$- \operatorname{re}{\left(y\right)} - i \operatorname{im}{\left(y\right)} + 7$$
product
7 - re(y) - I*im(y)
$$- \operatorname{re}{\left(y\right)} - i \operatorname{im}{\left(y\right)} + 7$$
=
7 - re(y) - I*im(y)
$$- \operatorname{re}{\left(y\right)} - i \operatorname{im}{\left(y\right)} + 7$$
7 - re(y) - i*im(y)