Answer:
The solution would be (-19, 40)
Step-by-step explanation:
In order to solve this system by substitution, simply take the value of y in the first equation and use it in place of y in the second. This will allow you to solve for x.
5x + 2y = 15
5x + 2(-3x - 2) = 15
5x - 6x - 4 = 15
-x - 4 = 15
-x = 19
x = -19
Now that we have the value of x, we can find the value of y.
y = -3x - 3
y = -3(-19) - 3
y = 43 - 3
y = 40
