Question

observe o exemplo e resolva: 3/5:4/2=3/5x2/4=6/20
a) 1/5:3/7= b) 4/3:8/2= c) 7/5:/3/2=7 d) 3/5:8/5= e) 3/3:1/9= f) 2/1:5/4= g) 5/8:8/5= h) 2/6:6/7= i) 5/2:8/3= j) 2/8:7/4= k) 3/2:4/7=
obs: não esqueça de simplificar as frações​

Answer 1

Resposta:

a) $\frac{1}{5} :\frac{3}{7} =\frac{1}{5} .\frac{7}{3} =\frac{7}{15}$

b) $\frac{4}{3} :\frac{8}{2} =\frac{4}{3} .\frac{2}{8} =\frac{8}{24} =\frac{1}{3}$

c) $\frac{7}{5} :\frac{3}{2} =\frac{7}{5} .\frac{2}{3} =\frac{14}{15}$

d) $\frac{3}{5} :\frac{8}{5} =\frac{3}{5} .\frac{5}{8} =\frac{15}{40} =\frac{3}{8}$

e) $\frac{3}{3} :\frac{1}{9} =\frac{3}{3} .\frac{9}{1} =\frac{27}{3} =9$

f) $\frac{2}{1} :\frac{5}{4} =\frac{2}{1} .\frac{4}{5} =\frac{8}{5} =1\frac{3}{5}$

g) $\frac{5}{8} :\frac{8}{5} =\frac{5}{8} .\frac{5}{8} =\frac{25}{64}$

h) $\frac{2}{6} :\frac{6}{7} =\frac{2}{6} .\frac{7}{6} =\frac{14}{36} =\frac{7}{18}$

i) $\frac{5}{2} :\frac{8}{3} =\frac{5}{2} .\frac{3}{8} =\frac{15}{16}$

j) $\frac{2}{8} :\frac{7}{4} =\frac{2}{8} .\frac{4}{7} =\frac{8}{56} =\frac{1}{7}$

k) $\frac{3}{2} :\frac{4}{7} =\frac{3}{2} .\frac{7}{4} =\frac{21}{8} =3$