Andy está armando un rompecabezas. El rompecabezas tiene ciento cincuenta piezas.
El primer día Andy arma treinta y seis piezas.
El segundo día Andy arma cuarenta y una piezas.
El tercer día Andy arma sesenta y ocho piezas.
Andy está molesto porque ya no quedan piezas. ¿Cuántas piezas necesita Andy para terminar de armar el rompecabezas? Demuestra todo tu razonamiento matemático.
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