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Calculati, folosind proprietatile inmultirii si impartirii: a) (1/2x2/3x3/4x...x2013/2014)+2013/2014=
b) (7/4+7/8+7/12+....+7/100):1/4+1/8+1/12+....+1/100


Răspuns :

dupa simplificare ramane 1/2014+2013/2014=2014/2014=1

7/4(1+1/2+1/3+............1/25):1/4(1+1/2+1/3+.......+1/25)|:(1+1/2+1/3+....+1/25)
7/4*4=7