Question

Respueta de 15/4 – 3/5 con procedimiento

Answer 1

$\bf \textcolor{blue}{ \frac{15}{4} - \frac{3}{5} = } \\ \\ \bf \textcolor{red}{ \frac{15 \times 5 - 4 \times 3}{4 \times 5} = } \\ \\ \bf \textcolor{blue}{ \frac{75 - 12}{20} = } \\ \\ \boxed{ \frac{63}{20} }$

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