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$12$ $+\dfrac {4} {7}+\dfrac {20} {7}=$ $\dfrac {23} {7}$ $140$ $→$ $7$ $7$ $\dfrac {21} {13}+\dfrac {14} {13}+\dfrac {10} {13}=$ $\dfrac {43} {11}.\dfrac {29} {11}=$ $\dfrac {15} {11}+\dfrac {10} {11}+\dfrac {21} {11}=$ $\dfrac {89} {13}$ $\dfrac {78} {13}$ $=$ $\dfrac {31} {17}+\dfrac {41} {17}+\dfrac {38} {17}$ $=$ $103$ $\bar{19} $ $\dfrac {94} {19}=$
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Aritmética y álgebra
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Profesor de Qanda - MariaRec
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