Explicație pas cu pas:
[tex] 1.\frac{1}{2} + \frac{3}{2} + \frac{1}{2} + \frac{1}{2} = \frac{1 + 3 + 1 + 1}{2} = \frac{6}{2} = 3[/tex]
[tex]2.x - \frac{10}{100} \times x = 54 \\ x - \frac{1}{10} \times x = 54 \\ \frac{10x}{10} - \frac{x}{10} = \frac{540}{10} \\ 10x - x = 540 \\ 9x = 540 \\ x = 60[/tex]
[tex]3. \: \: 2.3(6) = \frac{236 - 23}{90} = \frac{213}{90} = \frac{71}{30} [/tex]
[tex]4.la = \frac{3}{4} \times lu \\ la = \frac{3}{4} \times 12 \\ la = 3 \times 3 \\ la = 9[/tex]
(n-am stiut cum sa pun caps lock, tu pe caiet in loc de la pui "l" si in loc de lu pui "L")
[tex]5.v = {l}^{3} \\ v = 27 {cm}^{3 } = = > l = 3[/tex]
6. 6 elevi
