Question

41) Efectuați:
69
a) 11:22'
1) 1/3:6;
5
12 4
39
b) 13:
10
c)
9): 1/1;
h) 2:1
40
d) 2:21.
09:4;
5
e) 56:
15:15.
15/12/2
11'
Ex 41 va rogggg

Answer 1

Răspuns:

a. 6/11 ÷ 9/22 = 6/11 * 22/9 = 2* 2/3 = 12/3 = 4

b. 12/13 ÷ 4/39 = 12/13 * 39/4 = 3*3= 9

c. 2/3 ÷ 1/6 = 2/3 * 6/1 = 2*2=4

d. 3/4 ÷ 21/40 = 3/4 * 40/21 = 10/7

e. 56 ÷ 8/11 = 56/1 ÷ 8/11 = 56/1* 8/11 = 448/11

f. 1 5/13 ÷ 6 = 18/13 ÷ 6 = 18/13 * 1/6 = 3/13

g. 7/9 ÷ 2 1/3 = 7/9 ÷ 7/3 = 7/9 * 3/7 = 3

h. 2 1/2 ÷ 1 1/4 = 5/2 ÷ 5/4 = 5/2 * 4/5 = 2

i. 9 4/5 ÷ 4 2/3 = 49/5 ÷ 15/3 = 49/5 * 3/15= 147/75

j. 5 1/3 ÷ 1 5/9 = 16/5 ÷ 14/9 = 16/5 * 9/14 = 8/5 * 9/7 = 72/35