r Answer:
( 4, -2)
Step-by-step explanation:
{y=x-6
{3x+2y=8
You already have y as your first equation's subject. So, use the content from the y equation and substitute it into the second equation. Then you get,
3x+2(x-6)=8
Solve it like a normal equation for the unknown.
3x+2x-12=8
5x-12=8
5x=20
x=4
Now, substitue the new x we got into the first equation.
y=x-6
y=4-6
y=-2
