Answer:
The correct answer would be (-20, -23.3)
Step-by-step explanation:
To solve this, start by solving the first equation for x.
6x = 90 + 9y
x = 15 + 1.5y
Now that we have this, input the value for x in the second equation.
x - 3y = 50
(15 + 1.5y) - 3y = 50
15 - 1.5y = 50
-1.5y = 35
y = -23.3
Now input that value for y and solve for x.
x - 3y = 50
x - 3(-23.3) = 50
x + 70 = 50
x = -20
