there are 4 possible answers.
X= 1 , Y=2
Y=1 , X=2
X=0 , Y-3
Y=0 , X=3
(0, -3)
the Y in the sentence X plus Y equals 5 is Y=3 or 2 if the X is 2 or 3
Symmetric Property of Addition
x=4 y=x+3 y=4+3 y=7
Y = x - 7
x = -3, y = 7
x = -2 and y = 3
(x, y) = (-3, -3) or (3, 3)
It is (-1, 3).
10
x = 5, y = -2
If x+y = 3 and y times x = 2 then y = 1.