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calculati suma numerelor x si indirect in care fiecare dintre cazurile următoare a 8

Calculati Suma Numerelor X Si Indirect In Care Fiecare Dintre Cazurile Următoare A 8 class=

Răspuns :

x=8/21+11/21+15/63= 24/63+33/63+15/63=(24+33+15)/63=72/63=24/21
y=19/35+5/35+12/70=38/70+10/70+12/70= (38+10+12)/70=60/70=6/7
x+y=24/21+6/7=24/21+18/21=(24+18)/21=42/21=2