Question

me ajudem por favor​

Answer 1

Resposta:

c) -23/30

e) -3/8

f) -1/4

g) 4/3

i) 1/2

j) -1

Explicação passo-a-passo:

$- \frac{3}{5} - \frac{1}{6} = \frac{ - 18 - 5}{30} = - \frac{23}{30}$

$\frac{5}{12} \times ( - \frac{9}{10} ) = - \frac{45}{120} \div \frac{15}{15} = - \frac{3}{8}$

$\frac{7}{12} \times ( - \frac{6}{14} ) = - \frac{42}{168} \div \frac{42}{42} = - \frac{1}{4}$

$- \frac{8}{9} \div ( - \frac{2}{3}) = \frac{24}{18} \div \frac{6}{6} = \frac{4}{3}$

$( - \frac{6}{15} ) \times( - \frac{5}{4} ) = \frac{30}{60} \div \frac{30}{30} = \frac{1}{2}$

$\frac{4}{7} \div ( - \frac{12}{21}) = - \frac{84}{84} \div \frac{84}{84} = - 1$