Question

ajutor!Va rog repede!​

Answer 1

Răspuns:

introducem intregii in fractie

3 si 1/4=(3·4+1)/4=13/4

2/15:4/5:13/4=2/15·5/4:13/4=1/6·4/13=2/39

2/15·5/4 se simplifica pe diagonala=1/6

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1 si 13/15=28/15

5/4·15/28:8/7=75/112·7/8=525/896

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2 si 1/12=25/12

7/5·14/3:25/12=98/15·12/25=1176/375

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3si 3/8=27/8

4/45·8/27:15/2=32/1215·2/15=64/18225

impartirea a doua fractii se face prin inmultirea primei fractii cu a doua fractie inversata