Respuesta :
7/10 then becomes 28/40
5/8 then becomes 25/40
7/20 becomes 14/40
28+25+14 = 67
You have 67/40
subtract 40 from the top to get 27/40
You cannot reduce any farther, so you answer is 1 27/40
5/8 then becomes 25/40
7/20 becomes 14/40
28+25+14 = 67
You have 67/40
subtract 40 from the top to get 27/40
You cannot reduce any farther, so you answer is 1 27/40