Find two numbers a and b whose sum a+b is 1 and whose difference a−b is 1

Answer 1

umm
a+b = 1
a−b = 1

why not add them and see what happens?

Answer 2

ok sp basically
0=0
1=1
2=2
3=3
4=4
5=5
6=6
7=7
8=8
9=9
10=10
11=11
12=12
13=13
14=14

Answer 3

a = 1
b = 0