Răspuns:
1.
[tex]4(0.25 \times 4 - \frac{3}{4} \times 2) = \\ \\ = 4(1 - \frac{3}{2} ) \\ \\ = 4( \frac{2}{2} - \frac{3}{2} ) = \\ \\ = 4 \times ( - \frac{1}{2} ) = \\ \\ = - 2[/tex]
Raspunsul este: 10. d) ( -2/10)
2.
[tex] \frac{a}{b} = \frac{8}{7} = > \\ \\ = > b = \frac{7a}{8} \\ \\ \\ \frac{b}{2a} = \\ \\ = \frac{ \frac{7a}{8} }{2a} = \\ \\ = \frac{7a}{16a} = \\ \\ = \frac{7}{16} [/tex]
Raspunsul corect este b. 7/16.
Succes! ♡︎♥︎♡︎
