3
If 3x - y = -3 and x + 5y = 15, what is the value of y?
X+5y=15 x=15-5y 3x-y=-3 3(15-5y) -y=-3 45-15y-y+3=0 48 -16y=0
48=16y y=48 y=3
16
48=16y y=48 y=3
16
3x-y=-3 x+5y=15
-y=-3-3x x=15-5y
y=3+3x
by looking at these two equations, I'm guessing that x=0and y=3 because when you plug those integers into these equations, they both work out .
-y=-3-3x x=15-5y
y=3+3x
by looking at these two equations, I'm guessing that x=0and y=3 because when you plug those integers into these equations, they both work out .
