° 1/2 es equivalente a 2/4
5/2+ 3/4 = 4/?+3/4 = ?/4
°si 1/3 es equivalente a 3/9
5/3 + 6/9 = ?/9+6/9 = ?/?
°Si 1/5 es equivalente a 3/15
6/5 - 16/15 = ?/15 - 16/15 = ?/?
°Si 1/7 es equivalente a 4/28
6/5 - 10/28 = ?/? - 10/28 = ?/?
me ayudan doy coronita ;-;