continuación del taller 1 (nivel 2):

NIVEL 2:

1.a)8/7,9/8,5/4 → 9/56,8/56,5/56

b)4/5,5/6,8/10,3/4 → 8/60,5/60,4/60,3/60

2. a)1/5 + 3/4 - 2/8 + 1/3 = 8 + 30 - 10 + 120/40 = 148/40 =74/20 = 37/10

b)4/1 + 1/3 - 3/5 - 8/6 =120 + 10 -18 - 40/30 = 130 -58/30 = 72/30 = 36/15 = 12/5

3. a)3/4 . 5/2 ÷ 4/6 = 15/8 ÷ 4/6 = 15/8.6/4 = 90/32 = 45/16

b)7/1 ÷ 3/5 . 3/4 . 1/3 = 7/1 ÷ 9/60 = 1/7 . 60/9 = 60/63