Express x in terms of y where -9*x+4*y=-20
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The solution
Detail solution
Given the linear equation:
-9*x+4*y = -20
Looking for similar summands in the left part:
-9*x + 4*y = -20
Move the summands with the other variables
from left part to right part, we given:
$$- 9 x = - 4 y - 20$$
Divide both parts of the equation by -9
x = -20 - 4*y / (-9)
We get the answer: x = 20/9 + 4*y/9
20 4*re(y) 4*I*im(y)
x1 = -- + ------- + ---------
9 9 9
$$x_{1} = \frac{4 \operatorname{re}{\left(y\right)}}{9} + \frac{4 i \operatorname{im}{\left(y\right)}}{9} + \frac{20}{9}$$
x1 = 4*re(y)/9 + 4*i*im(y)/9 + 20/9