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efectuați: a) 3/7*4/9 b) 4/9*5/8 c.3/8*5/9 d.7/2*4/5 e4/7*5/8 f 5/6*9/8​

Răspuns :

Răspuns:

a)3/7×4/9= 12/63=4/21

b)4/9×5/8= 20/72=10/36=5/18

c)3/8×5/9=15/72=5/24

d)7/2×4/5= 28/10=14/5

e)4/7×5/8= 20/56= 10/28=5/14

f)5/6×9/8= 45/48