MO
La o librărie s-au vîndut cărți de matematică la pretul de 25 lei cartea și de
istorie la...
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Mathematics, 06.09.2021 15:20 marinahuntg
MO
La o librărie s-au vîndut cărți de matematică la pretul de 25 lei cartea și de
istorie la pretul de 22 lei cartea, încasîndu-se o sumă de 1952 lei. Cite cărți
de fiecare fel s-au vândut, stiind că s-au vândut de patru ori mai multe cărţi de
matematică decît de istorie
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