Respuesta :
Make sure that the bottom of the fraction are the same number. So multiply 8 by 5 and the top which is 25 and the multipy 4 to 10 which is 40 and 9 times 4 is 36.
1 25/40 + 36/40 = 1 61/40 = 2 21/40
1 25/40 + 36/40 = 1 61/40 = 2 21/40