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Respondido

5) Resolve as operades com frações a seguir
a) 2/3 - 5/3 =
b) 7/4-3/4 =
c) 8/5.6/3 =
d) 7/5 : 5/8 =
e) 5/4 +6/5 =
f) 8/3 - 5/4 =
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Resposta :

Resposta:

[tex]\frac{2}{3} -\frac{5}{3} =\frac{2-5}{3} =\frac{-3}{3}=-1[/tex]

[tex]\frac{7}{4} -\frac{3}{4} =\frac{7-3}{4} =\frac{4}{4} =1[/tex]

[tex]\frac{8}{5} .\frac{6}{3} =\frac{48}{15}[/tex] (simplifica por 3) [tex]=\frac{16}{5}[/tex]

[tex]\frac{7}{5}[/tex]  ÷ [tex]\frac{5}{8} = \frac{7}{5} .\frac{8}{5} =\frac{56}{25}[/tex]

[tex]\frac{5}{4} +\frac{6}{5} =\frac{25+24}{20} =\frac{49}{20}[/tex]

[tex]\frac{8}{3} -\frac{5}{4} =\frac{32-15}{12} =\frac{17}{12}[/tex]

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