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a fost răspuns

Calculati 7/12+5/18;15/16-3/4;-3/14+2/21;1 3/7 -2/3;

Răspuns :

Renatemambouko
7/12+5/18=
=(21+10)/36=31/36

15/16-3/4=(15-12)/16=3/16

-3/14+2/21=(-9+4)/42=-5/42


1 3/7 -2/3=10/7-2/3=(30-14)/21=16/21

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