3целых11/15 меньше х/15 меньше 4 решите плизз

[latex] \left \{ {{3 \frac{11}{15}\ \textless \ \frac{x}{15} } \atop {\frac{x}{15}\ \textless \ 4} \right. \\ \left \{ {{\frac{56}{15}\ \textless \ \frac{x}{15} } \atop {\frac{x}{15}\ \textless \ \frac{60}{15} } \right. \\ \left \{ {{x\ \textgreater \ 56} \atop {x\ \textless \ 60}} \right. \\ 56\ \textless \ x\ \textless \ 60[/latex]

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