Question

Need them fast....Please answer​

Answer 1

Answer:

(I)

$\frac{n}{5} - \frac{5}{7} = \frac{2}{3} \\ \frac{n}{5} = \frac{2}{3} + \frac{5}{7} \\ \frac{n}{5} = \frac{14 + 15}{21} \\ \frac{n}{5} = \frac{29}{21} \\ n = \frac{29}{21} \times 5 \\ n = \frac{145}{21}$

ii

$\frac{z}{2} + \frac{z}{3} - \frac{z}{6} = 8 \\ \frac{3 z+ 2 z- z}{6} = 8 \\4 z = 8 \times 6 \\ z = \frac{48}{4} = 12$