Question

1)Calcule as frações abaixo e simplifique o resultado quando possível.

a) 4/8 - 1/8=

b) 305/4 + 54/4= =

c)16 /21 x 7/12 x 6/8= =

d) 3/6 : 4/ 9=

e) 117/51 : 13/17=​

Answer 1

Resposta:

a) 3/8  

b) 359/4

c) 1/3

d) 9/8

e) 3/1 ou 3

Explicação passo-a-passo:

a) $\frac{4}{8} -\frac{1}{8} =\frac{4-1}{8} =\frac{3}{8}$

b) $\frac{305}{4} +\frac{54}{4} =\frac{305+54}{4} =\frac{359}{4}$

c) $(\frac{16}{21} )(\frac{7}{12} )(\frac{6}{8} )=(\frac{7}{21} )(\frac{6}{12} )(\frac{16}{8} )=(\frac{1}{3} )(\frac{1}{2} )(\frac{2}{1} )=\frac{2}{6} =\frac{1}{3}$

d) $\frac{3}{6} :\frac{4}{9} =(\frac{3}{6} )(\frac{9}{4} )=(\frac{1}{2})(\frac{9}{4} )=\frac{9}{8}$

e) $\frac{117}{51} :\frac{13}{17} =(\frac{117}{51} )(\frac{17}{13} )=(\frac{17}{51} )(\frac{117}{13} )=(\frac{1}{3} )(\frac{9}{1} )=\frac{9}{3} =\frac{3}{1} =3$