Question

1/2 + 1/3=
1/2+1/5=
1/3+1/4 =
1/4+1/5=
1/2 +1/4=
1/3+1/6=
1/2+1/6=
1/4+1/8=

Answer 1

1/2+1/3=1/5=5
1/2+1/5=1/7=7
1/3+1/4=1/7=7
1/4+1/5=1/9=9
1/2+1/4=1/6=6
1/3+1/6=1/9=9
1/2+1/6=1/8=8
1/4+1/8=1/12=12