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1)
![( \frac{2}{7} -3- \frac{1}{6} )+(4 \frac{2}{3} +3 \frac{3}{7} ) = ( \frac{12-126-7}{42} ) + ( \frac{14}{3} + \frac{24}{7} ) = ( -\frac{121}{42} )+( \frac{98+72}{21} ) ( \frac{2}{7} -3- \frac{1}{6} )+(4 \frac{2}{3} +3 \frac{3}{7} ) = ( \frac{12-126-7}{42} ) + ( \frac{14}{3} + \frac{24}{7} ) = ( -\frac{121}{42} )+( \frac{98+72}{21} )](https://tex.z-dn.net/?f=%28+%5Cfrac%7B2%7D%7B7%7D+-3-+%5Cfrac%7B1%7D%7B6%7D+%29%2B%284+%5Cfrac%7B2%7D%7B3%7D+%2B3+%5Cfrac%7B3%7D%7B7%7D+%29+%3D+%28+%5Cfrac%7B12-126-7%7D%7B42%7D+%29+%2B+%28+%5Cfrac%7B14%7D%7B3%7D+%2B+%5Cfrac%7B24%7D%7B7%7D+%29+%3D+%28+-%5Cfrac%7B121%7D%7B42%7D+%29%2B%28+%5Cfrac%7B98%2B72%7D%7B21%7D+%29)
![= ( -\frac{121}{42} )+( \frac{98+72}{21} )=(- \frac{121}{42} )+( \frac{170}{21} )= \frac{-121+340}{42} = \frac{219}{42} = \frac{73}{14} = ( -\frac{121}{42} )+( \frac{98+72}{21} )=(- \frac{121}{42} )+( \frac{170}{21} )= \frac{-121+340}{42} = \frac{219}{42} = \frac{73}{14}](https://tex.z-dn.net/?f=%3D+%28+-%5Cfrac%7B121%7D%7B42%7D+%29%2B%28+%5Cfrac%7B98%2B72%7D%7B21%7D+%29%3D%28-+%5Cfrac%7B121%7D%7B42%7D+%29%2B%28+%5Cfrac%7B170%7D%7B21%7D+%29%3D+%5Cfrac%7B-121%2B340%7D%7B42%7D+%3D+%5Cfrac%7B219%7D%7B42%7D+%3D++%5Cfrac%7B73%7D%7B14%7D+)
![=5 \frac{3}{14} =5 \frac{3}{14}](https://tex.z-dn.net/?f=%3D5+%5Cfrac%7B3%7D%7B14%7D+)
2)
![\frac{(2 \frac{4}{5} +5 \frac{3}{5}) }{(1 \frac{2}{3}+2 \frac{2}{7} ) } = \frac{ \frac{14}{5} + \frac{28}{5} }{ \frac{5}{3}+ \frac{16}{7} } = \frac{ \frac{42}{5} }{ \frac{35+48}{21} } = \frac{ \frac{42}{5}}{ \frac{83}{21} } = \frac{42*21}{5*83} = \frac{882}{415} =2 \frac{52}{415} \frac{(2 \frac{4}{5} +5 \frac{3}{5}) }{(1 \frac{2}{3}+2 \frac{2}{7} ) } = \frac{ \frac{14}{5} + \frac{28}{5} }{ \frac{5}{3}+ \frac{16}{7} } = \frac{ \frac{42}{5} }{ \frac{35+48}{21} } = \frac{ \frac{42}{5}}{ \frac{83}{21} } = \frac{42*21}{5*83} = \frac{882}{415} =2 \frac{52}{415}](https://tex.z-dn.net/?f=+%5Cfrac%7B%282+%5Cfrac%7B4%7D%7B5%7D+%2B5+%5Cfrac%7B3%7D%7B5%7D%29+%7D%7B%281+%5Cfrac%7B2%7D%7B3%7D%2B2+%5Cfrac%7B2%7D%7B7%7D+%29+%7D+%3D++%5Cfrac%7B+%5Cfrac%7B14%7D%7B5%7D+%2B+%5Cfrac%7B28%7D%7B5%7D+%7D%7B+%5Cfrac%7B5%7D%7B3%7D%2B+%5Cfrac%7B16%7D%7B7%7D++%7D+%3D+%5Cfrac%7B+%5Cfrac%7B42%7D%7B5%7D+%7D%7B+%5Cfrac%7B35%2B48%7D%7B21%7D+%7D+%3D+%5Cfrac%7B+%5Cfrac%7B42%7D%7B5%7D%7D%7B+%5Cfrac%7B83%7D%7B21%7D+%7D+%3D+%5Cfrac%7B42%2A21%7D%7B5%2A83%7D+%3D+%5Cfrac%7B882%7D%7B415%7D+%3D2+%5Cfrac%7B52%7D%7B415%7D+)
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andrecalderonm:
De donde sale el 126?
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