Mathematics, 23.10.2020 01:01 faithtunison

PROCEDIMIENTO POR FAVOR Una caja contiene bolas blancas, negras y rojas. Si la quinta parte de las bolas son blancas, la séptima parte son
negras y hay 7 bolas rojas, ¿cuántas hay en total?

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PROCEDIMIENTO POR FAVOR Una caja contiene bolas blancas, negras y rojas. Si la quinta parte de las...

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