Sum and Difference of Numbers
The two numbers are +4 and -4 whose sum is 0 and difference is 8
Step-by-step explanation:
Let the two numbers be x and y .
Then
x + y = 0; ------- (1)
and
x - y = 8; ------- (2)
Adding the two equation,
x + y = 0;
x - y = 8;
------------
2 × x = 8
⇒ x = 8/2
⇒ x = +4
Subtracting (2) from (1)
⇒ 2 × y = -8
⇒ y = -4
Hence, the two numbers are +4 and -4 whose sum is 0 and difference is 8
