Express x in terms of y where -11*x+9*y=-20
The teacher will be very surprised to see your correct solution 😉
The solution
Detail solution
Given the linear equation:
-11*x+9*y = -20
Looking for similar summands in the left part:
-11*x + 9*y = -20
Move the summands with the other variables
from left part to right part, we given:
$$- 11 x = - 9 y - 20$$
Divide both parts of the equation by -11
x = -20 - 9*y / (-11)
We get the answer: x = 20/11 + 9*y/11
20 9*re(y) 9*I*im(y)
x1 = -- + ------- + ---------
11 11 11
$$x_{1} = \frac{9 \operatorname{re}{\left(y\right)}}{11} + \frac{9 i \operatorname{im}{\left(y\right)}}{11} + \frac{20}{11}$$
x1 = 9*re(y)/11 + 9*i*im(y)/11 + 20/11