Respuesta:
Fácil amigo :D
Explicación paso a paso:
1). [tex]\frac{5}{7}+\frac{10}{12}= \frac{5}{7} +\frac{5}{6} =\frac{30+35}{42}=\frac{65}{12}[/tex]
2). [tex]\frac{10}{15} - \frac{7}{20} = \frac{2}{3} - \frac{7}{20} =\frac{40-21}{60} =\frac{19}{60}[/tex]
3). [tex]\frac{25}{30}+\frac{9}{14}=\frac{5}{6} +\frac{9}{14}=\frac{70+54}{84}=\frac{124}{84}=\frac{31}{21}[/tex]
4). [tex]\frac{12}{10}-\frac{6}{12} =\frac{6}{5}-\frac{1}{2} =\frac{12-5}{10} =\frac{7}{10}[/tex]
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Respuesta:
Fácil amigo :D
Explicación paso a paso:
1). [tex]\frac{5}{7}+\frac{10}{12}= \frac{5}{7} +\frac{5}{6} =\frac{30+35}{42}=\frac{65}{12}[/tex]
2). [tex]\frac{10}{15} - \frac{7}{20} = \frac{2}{3} - \frac{7}{20} =\frac{40-21}{60} =\frac{19}{60}[/tex]
3). [tex]\frac{25}{30}+\frac{9}{14}=\frac{5}{6} +\frac{9}{14}=\frac{70+54}{84}=\frac{124}{84}=\frac{31}{21}[/tex]
4). [tex]\frac{12}{10}-\frac{6}{12} =\frac{6}{5}-\frac{1}{2} =\frac{12-5}{10} =\frac{7}{10}[/tex]