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Va rog !!Repede !!pls !!ex 11

Va Rog Repede Pls Ex 11 class=

Răspuns :

n=10a+7

n=15b+12

n+3=10a+7+3=10a+10=10c

n+3=15b+12+3=15b+15=15d



n+3=[10,15]=30

n=30-3

n=27 oua