Question

Vă rog frumos sa ma ajutati.Vreau sa fie rezolvat complex

Answer 1

1)$\frac{5}{2}- \frac{9}{4}= \frac{ 10-9}{4} = \frac{1}{4}$
2)$\frac{1}{4}: \frac{1}{16}= \frac{1}{4}$x$\frac{16}{1}$$\frac{16}{4}=4$
3)$\frac{1}{7}-4= \frac{1}{7}- \frac{28}{7} = \frac{1-28}{7}=- \frac{27}{7}=-3 \frac{6}{7}$
4)$9 \frac{2}{3}: (-3\frac{6}{7})= \frac{29}{3}$x$- \frac{7}{27}=- \frac{29x7}{3x27}=- \frac{203}{81} =-2 \frac{41}{81}$