Question

a) 4/3 . 5/8 = b) (3/4) . (- 6/5)= c) (9/3) . ( -2/4)= d) ( - 5/3 ) . ( - 4/12 ) = e) ( - 4/3 ) : ( - 1/2 ) = f) ( - 3/6 ) : ( + 2/5 ) =

Answer 1

Resposta:

$a) \frac{5}{6} \\ b) \frac{ - 9}{10} \\ c) - 1,5\\ d) \frac{5}{9} \\ e) \frac{8}{3} \\ f) - 1,25$

Explicação passo-a-passo:

$a) \frac{4}{3} \times \frac{5}{8} = \frac{20}{24} = \frac{10}{12} = \frac{5}{6} \\ \\ b)\frac{3}{4} \times\frac{ - 6}{5} = \frac{ - 18}{20} = \frac{ - 9}{10} \\ \\ c) \frac{9}{3} \times \frac{ - 2}{4} = \frac{ - 18}{12} = - 1,5\\ \\ d) \frac{ - 5}{3} \times \frac{ - 4}{12} = \frac{20}{36} = \frac{10}{18} = \frac{5}{9} \\ \\ e) \frac{ - 4}{3} \div \frac{ - 1}{2} = \frac{ - 4}{3} \times \frac{ - 2}{1} = \frac{8}{3} \\ \\ f) \frac{ - 3}{6} \div \frac{2}{5} = \frac{ - 3}{6} \times \frac{5}{2} = \frac{ - 15}{12} = - 1,25$