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dau coronita

Răspuns:
Explicație pas cu pas:
a/b:c/d c/d:a/b
9/28 28/9
64/25 25/64
(3/4):(2 1/3) = (3/4):(7/3)=((3/4)·(3/7)/=9/28
(2 1/3):(3/4)=(7/3):(3/4)=(7/3)·(4/3)=(7·4)/(3·3)=28/9
(3 1/5):(1 1/4)=(16/5):(5/4)= (16/5)·(4/5)=(16·4)/(5·5)=64/25
(1 1/4):(3 1/5)=(5/4):(16/5)=(5/4)·(5/16)=(5·5)/(4·16)=25/64
Răspuns:
3/4:2 1/3=9/28
2 1/3:3/4=28/9
3 1/5:1 1/4=64/25
1 1/4:3 1/5=25/64