The teacher will be very surprised to see your correct solution 😉

Detail solution

Given the linear equation:

Looking for similar summands in the left part:

Move the summands with the other variables

from left part to right part, we given:

$$8 x = 7 y - 13$$

Divide both parts of the equation by 8

We get the answer: x = -13/8 + 7*y/8

8*x-7*y = -13

Looking for similar summands in the left part:

-7*y + 8*x = -13

Move the summands with the other variables

from left part to right part, we given:

$$8 x = 7 y - 13$$

Divide both parts of the equation by 8

x = -13 + 7*y / (8)

We get the answer: x = -13/8 + 7*y/8

Rapid solution
[src]

13 7*re(y) 7*I*im(y) x1 = - -- + ------- + --------- 8 8 8

$$x_{1} = \frac{7 \operatorname{re}{\left(y\right)}}{8} + \frac{7 i \operatorname{im}{\left(y\right)}}{8} - \frac{13}{8}$$

x1 = 7*re(y)/8 + 7*i*im(y)/8 - 13/8