Answer:
x = 16, y = -4
Explanation:
First, we can say that "x = the first number" and "y = the second number"
The first number plus twice the second number is 8:
x + 2y = 8
Twice the first number plus the second number totals 28:
2x + y = 28
Next, we solve the system of equations.
x + 2y = 8 ---> 2x + 4y = 16 ---> 2x = 16 - 4y
2x + y = 28 ---> 2x = 28 - y
16 - 4y = 28 - y
-4y + y = 28 - 16
-3y = 12
y = -4
Now, we plug "y = -4" into either one of the equations to find x:
x + 2(-4) = 8
x + -8 = 8
x = 8 + 8
x = 16