1) -3,7 + (-5,93) = -3,7 - 5,93 = -9,63
2) 7,421 - 8,51 = -1,089
3) -4,76 - (-5,92) = -4,76 + 5,92 = 1,16
4) -$$\frac{4}{7}$$ + 3$$\frac{5}{14}$$ = -$$\frac{4}{7}$$ + $$\frac{47}{14}$$ = -$$\frac{8}{14}$$ + $$\frac{47}{14}$$ = $$\frac{39}{14}$$ = 2$$\frac{11}{14}$$
5) $$\frac{3}{8}$$ + (-$$\frac{5}{12}$$) = $$\frac{3}{8}$$ - $$\frac{5}{12}$$ = $$\frac{9}{24}$$ - $$\frac{10}{24}$$ = -$$\frac{1}{24}$$
6) $$\frac{3}{4}$$ : (-$$\frac{5}{3}$$) = $$\frac{3}{4}$$ * (-$$\frac{3}{5}$$) = -$$\frac{9}{20}$$
7) -$$\frac{3}{8}$$ * $$\frac{5}{4}$$ = -$$\frac{15}{32}$$
8) -0,5 * (-0,2) = 0,1
9) 3,2 * (-0,3) = -0,96
10) -$$\frac{4}{15}$$ - $$\frac{5}{24}$$ = -$$\frac{32}{120}$$ - $$\frac{25}{120}$$ = -$$\frac{57}{120}$$ = -$$\frac{19}{40}$$