Răspuns:
a)
[tex] \frac{19 \times 2 + 1}{2} = \frac{38}{2}[/tex]
[tex] 1)\frac{1}{3} \times \frac{6}{13} \times \frac{38}{2} = \frac{2}{13} \times \frac{38}{2} = \frac{38}{13} [/tex]
b)
[tex] \frac{5}{4} \times \frac{8}{15} \times \frac{5}{9} = \frac{2}{3} \times \frac{5}{9} = \frac{30}{9} [/tex]
c)
[tex] \frac{6}{7} \times \frac{7}{5} \times 15 = \frac{6}{5} \times 15 =6 \times 75 = 450[/tex]
d)
[tex]6 \times \frac{5}{12} \times \frac{4}{3} = 6 \times \frac{5}{9} = \frac{54}{9} \times \frac{5}{9} = \frac{270}{9} [/tex]
Explicație pas cu pas:
sper ca te-am ajutat succes
