The 'answer' is a pair of numbers ... one for 'x' and another for 'y' ... that make
the statement true when you put them in place of 'x' and 'y'.
There are an infinite number of pairs that can do that, so there are an infinite
number of answers.
All you need is any pair of numbers that add up to 4 .
8
x=4 y=4
x = y = 0 ?
x = 0 and y = 4
y equals x plus 4 when y equals 0 then x equals 2i i is the square root of negative 1
symmetric property
Symmetry, which states that if A = B then B = A Put A = 4 and B = x + y
If X+Y=5;X=4, then x=4 and y=1
4
x=4 y=x+3 y=4+3 y=7
x = 2y = 4
Y = x - 7