Răspuns :

Dlkkaid
a) 30/70=3/7
b)cmmdc=10
   cmmmc=210...sper ca te-am ajutattt:D:D:D:)))
Mihaelapid
a) 30/70 = 3/7       :10
b) 30 = 2 * 3 * 5
    70 = 2 * 5 * 7
    cmmdc = 2 * 5 = 10
    cmmmc = 2 * 3 * 5 * 7 = 210

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