Question

Efetue utilizando o cancelamento


a)3/5 x 5/7

b)1/2 x 8/9 x 2 1/4

c)36/50 x 30/72 x 10/40

d)7/11 x 11/28

presisa do calculo !!!!!!!!

Answer 1

Resposta:

$a)~~\frac{3}{5}. \frac{5}{7} =\frac{15}{35} =\frac{3}{7} \\ \\ b)~~\frac{1}{2} .\frac{8}{9} .2~\frac{1}{4} =\frac{16}{72} =\frac{2}{9} \\ \\ c)~~\frac{36}{50} .\frac{30}{72} .\frac{10}{40} =\frac{18}{25} .\frac{5}{12} .\frac{1}{4} =\frac{90}{1200} =\frac{9}{120} =\frac{3}{40} \\ \\ d)~~\frac{7}{11} .\frac{11}{28} =\frac{7}{28} =\frac{1}{4}$