Question

3) (x + y) = 4; use x = 3, and y = 5​

Answer 1

Answer:

x=3, y=1

and

x=-1, y=5

Step-by-step explanation:

If x= 3;

(x+y) =4

=(3+y)=4

=y=4-3

=y=1

If y=5;

(x+y) =4

=(x+5)=4

=x=4-5

=x=-1

Answer 2

Answer:

if (x+y)=4

then

(3+5)=8