Answer:
(1,-2)
Step-by-step explanation:
To solve this using substitution, lets look at the main equation:
5x + y = 3
We know that y = -2x
So lets substitute that in:
5x + (-2x) = 3
Simplify to get:
3x = 3,
-> x = 1
Now to figure out y, lets plug it into the original equation:
y = -2x
-> y = -2(1)
y = -2
So the ordered pair is (1,-2)
