Answer:
here is the answer
Step-by-step explanation:
(x + y, x - y)= (4,2)
therefore, x + y= 4 and x - y = 2
equating
x +y =4
x= 4-y
substituting
x - y= 2
(4-y)-y=2
4-2y=2
4-2=2y
2=2y
2/2=y
1=y
therefore,
x + y=4
x + 1=4
x= 4 - 1
x=3
verifying
3 + 1=4
4=4
3 - 1=2
2=2
