a) -6,07 + 3,58 = -2.49;
b) $\frac{3}{5}$ + (-4) = -3.4;
c) $1\frac{3}{5}$ - $\frac{-7}{11}$ = $\frac{123}{55}$;
d) $\frac{-7}{13}$ + 0,6 = $\frac{4}{65}$;
e) -1,221 x $\frac{2}{-5}$ = 0,4884;
g) $\frac{-17}{7}$ / 0,25 = $\frac{-68}{7}$.
a) -6,07 + 3,58 = -2.49;
b) $\frac{3}{5}$ + (-4) = -3.4;
c) $1\frac{3}{5}$ - $\frac{-7}{11}$ = $\frac{123}{55}$;
d) $\frac{-7}{13}$ + 0,6 = $\frac{4}{65}$;
e) -1,221 x $\frac{2}{-5}$ = 0,4884;
g) $\frac{-17}{7}$ / 0,25 = $\frac{-68}{7}$.