a)  $\left(-5\right)-\left(-1\frac{3}{4}\right)=-5+1\frac{3}{4}=-3\frac{1}{4}$

b)  $\left(-2,2\right)+\left(-10\frac{1}{5}\right)=-2,2-10,2=-12,4$ $\left(-2,2\right)+\left(-10\frac{1}{5}\right)=-2,2-10,2=-12,4$

c)  $-\left(-1\frac{1}{3}\right)+\left(-15\right)=1\frac{1}{3}-15=-13\frac{2}{3}$

d)  $-\left(-9\right)-\left(-4\frac{1}{4}\right)=9+4\frac{1}{4}=13\frac{1}{4}$

e)  $\left(-3\frac{2}{5}\right)-4,8=-3,4-4,8=-8,2$

f)  $2\frac{1}{3}+\left(-5\frac{3}{5}\right)=2\frac{5}{15}-5\frac{9}{15}=-3\frac{4}{15}$