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Verificati daca urmatoarele rapoarte formeaza o proportie:
a)[tex] \frac{5}{6} [/tex] si [tex] \frac{17/3}{51/5} [/tex]
b)[tex] \frac{5 intregi1/3}{6}si [/tex][tex] \frac{2,5}{3/2} [/tex]  
c)[tex] \frac{1}{3} [/tex] si [tex] \frac{2,5}{7,5} [/tex]
Rezolvare completa va rog...
Multumesc :)


Răspuns :

a)
5/6
(17/3)/(51/5)=17/3× 5/51=17/3× 5/17×3=5/9
nu formeaza o proportie
b)
(5 1/3)/6 =16/18
2,5/(3/2)=25/10 ×2/3=3/2×2/3=1
nu formeaza o proportie
c)
1/3
2,5/7,5=25/75=1/3
formeaza o proportie  1/3=2,5/7,5