Question

Find two numbers a and b whose sum a+b is 0 and whose difference a−b is -6

Answer 1

a= -3
b= 3
This way when you add them you get 0 and when you subtract them you get negative 6

Answer 2

a+b = 0

a-b = -6

-6/2 = -3

-3 +3 = 0

-3 - 3 = -6

a = -3

b =3