Express x in terms of y where 20*x+5*y=-7
The teacher will be very surprised to see your correct solution 😉
The solution
Detail solution
Given the linear equation:
20*x+5*y = -7
Looking for similar summands in the left part:
5*y + 20*x = -7
Move the summands with the other variables
from left part to right part, we given:
$$20 x = - 5 y - 7$$
Divide both parts of the equation by 20
x = -7 - 5*y / (20)
We get the answer: x = -7/20 - y/4
7 re(y) I*im(y)
x1 = - -- - ----- - -------
20 4 4
$$x_{1} = - \frac{\operatorname{re}{\left(y\right)}}{4} - \frac{i \operatorname{im}{\left(y\right)}}{4} - \frac{7}{20}$$
x1 = -re(y)/4 - i*im(y)/4 - 7/20