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ex2 va rog mie urgent

Ex2 Va Rog Mie Urgent class=

Răspuns :

a)3/5 b)4/7 c)5/8
d)7/9 e)3×1/2=3/2 f)2×3/7+3/7=6/7+3/7=9/7
g)1×1/11+2×2/11+3×3/11+4×4/7=1/11+4/11+9/11+16/11=30/11