Question

xfa ayudemen con la pregunga 27 y 28 les ruego es urgente graciasssss

Answer 1

12/10 + 9/5 = 150/ 50 = 3

3/16 + 6/8 = 120/128 = 15/16

43/10 – 3/4= 142/40 = 71/20

55/12 – 7/8 = 356/96 = 89/24

 

(3/8 + 2/5) + (1/40 + 5/4) =
     31/40   +   204 /160 = 13,120 /6400 = 41/20

(25/7 + 1/5) + (6/8 + 7/3) =
     132/35   +  74/24 = 5758/840 = 2879/420