Respuesta:
a)
[tex]\frac{3}{5}*\frac{10}{21} = \frac{30}{105} = \frac{2}{7}[/tex]
b)
[tex]\frac{3}{2}* (\frac{1}{3}- \frac{1}{5})\\\\\frac{3}{2}* (\frac{5-3}{15} ) \\\\\frac{3}{2}*\frac{2}{15}\\\\\frac{6}{30}\\\\\frac{1}{5}[/tex]
c)
[tex](\frac{3}{10}+ \frac{12}{4} )(\frac{2}{9}- \frac{1}{8} )\\\\(\frac{6 + 60}{20} )(\frac{16-9}{72} )\\\\(\frac{66}{20} )(\frac{7}{72} )\\\\\frac{462}{1440}\\\\\frac{77}{240}[/tex]
d)
[tex]\frac{1}{4}*[\frac{2}{5} (\frac{2}{3}+1 )]\\\\\frac{1}{4} [\frac{2}{5} (\frac{5}{3} )]\\\\\frac{1}{4} [\frac{10}{15} ]\\\\\frac{10}{60}\\\\\frac{1}{6}[/tex]
Explicación paso a paso:
