Question

calculati:
uitate la poza de sus
il vreau doar pe 4 plz am de trimis pe edu ajutatima dau coroana de aur​

Answer 1

a)  $\frac{1}{3} - \frac{2}{3} =\frac{-1}{3}$

b) $\frac{-1}{3} +\frac{-2}{3} =\frac{-3}{3} =-1$

c)  $\frac{-1}{3} - \frac{-2}{3} = \frac{-1}{3} +\frac{2}{3} =\frac{1}{3}$

d)  $\frac{1}{5} + \frac{-3}{15} = \frac{3}{15} -\frac{3}{15} = 0$

e)  $\frac{-1}{2} + \frac{-3}{8} = \frac{-4}{8} +\frac{-3}{8} =\frac{-7}{8}$

f)  $\frac{-1}{5} - \frac{-7}{10} = \frac{-2}{10} +\frac{7}{10} =\frac{5}{10} =\frac{1}{2}$