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4. Comparați: a) 1/2:3<=>1/2:1/3 b)2/3:2/5<=>2/9:1/3​

4 Comparați A 123ltgt1213 B2325ltgt2913 class=

Răspuns :

Explicație pas cu pas:

a) 1/2:3 = 1/2 * 1/3 = 1/6 = 0,1(6)

1/2*1/3=1/6=0,1(6)

1/2:3=1/2*1/3

b) 2/3:2/5=2/3*5/2=10/6=1,(6)

2/9:1/3=2/9*3/1=2/3*1/1=2/3=0,(6)

2/3:2/5>2/9:1/3

c)5/7:5/1=5/7*1/5=1/7*1/1=1/7=0,142857142857

1/5:7/15=1/5*15/7=1/3*5/7=5/21=0,238095238095

5/7:5/1 < 1/5:7/15

d)5/8:1/8=5/8*8/1=5/1*1/1=5/1=5

2/9*45/1=2/1*5/1=10/1=10

5/8:1/8<2/9*45