Question

Me podrían ayudar con los ejercicios: 31,32 y 33. Por favor

Answer 1

ejercicio 31
a= 5/7
b= 2/11+2/5 = 10+22/55 = 32/55
c=7/16 +7/8 = 7+14/16 =21/16
d=4/9 - 7/9 = -3/9 = -1/3
e=4/7 - 2/3 =9-14/21 = -5/21
f=3/13 - 1/5 = 15 - 13/65  =2/65

ejercicio 32

a=11/15-2/3= 11/10/15 = 1/15
b=1/6+3/6-1/2 =1+3-3/6 =1/6
c=4/15+7/5-4/3 = 4+21-20/15 = 5/15 = 1/3
d=5/6+3/4+2/3 = 10+9+8/12 =27/12 = 9/4
e = 4/7+2/3-2 = 12+14-42/21 = -16/21
f= 1+3/4-1/3 = 12+9-4/12 = 17/12