Question

two brothers have sandwich divided into 4 pieces. they eat one part how many parts are left altogether

Answer 1

1
-
3
that the answer its now subtract its fraction figure it out

Answer 2

Well its mostly a subtraction problem or fraction but 1-4 will equal 3 but if each brother eat a piece then its 2 - 4 and it will end out in 2
hope this helps!