Question

Quanto é 3 quintos + 3 quartos +3 decimos

Answer 1

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$\frac{3}{5} + \frac{3}{4} + \frac{3}{10} = \\ \\ mmc(4,5,10)=2^2\times5=4\times5=20 \\ \\ \frac{12+15+6}{20} = \frac{33}{20} \\ \\ mmc \\ \\ 5,4,10|2 \\ 5,2,5~|2 \\ 5,1,5~|5 \\ 1,1,1$