Question

What is 1+2?????????????????

Answer 1

3

if a is 1 more than b it can be expressed as so:

a=b+1

b+1=a

b^2+1=a^2

b^2=a^2-1

b=a-1

if b if 1 then a is 2

b+1=a

-a+b=-1

a-b=1

a=2, b=1

a=b+1

a+b=3

1+2=3

Explanation: