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Veronicaivanov
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Daca axb=9/5 si c=20/27,atunci a x (b x c) este..

Răspuns :

DianaPatru
a×(b×c)=(a×b)×c=9/5×20/27=4/3
Raluca98t
a · b = [tex] \frac{9}{5} [/tex] 
c = [tex] \frac{20}{27} [/tex]
a · (b·c) = a · b · c = [tex] \frac{9}{5} * \frac{20}{27} = \frac{9*20}{5*27} = \frac{4}{3} [/tex]

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