Express x in terms of y where 7*x+5*y=8
The teacher will be very surprised to see your correct solution 😉
The solution
Detail solution
Given the linear equation:
7*x+5*y = 8
Looking for similar summands in the left part:
5*y + 7*x = 8
Move the summands with the other variables
from left part to right part, we given:
$$7 x = 8 - 5 y$$
Divide both parts of the equation by 7
x = 8 - 5*y / (7)
We get the answer: x = 8/7 - 5*y/7
8 5*re(y) 5*I*im(y)
x1 = - - ------- - ---------
7 7 7
$$x_{1} = - \frac{5 \operatorname{re}{\left(y\right)}}{7} - \frac{5 i \operatorname{im}{\left(y\right)}}{7} + \frac{8}{7}$$
x1 = -5*re(y)/7 - 5*i*im(y)/7 + 8/7