Решить систему методом подстановки

Решите задачу:

$\left \{ {{x + 5y = 35} \atop {3x + 2y = 27}} \right. \rightarrow \left \{ {{x = 35 - 5y} \atop {3x + 2y = 27}} \right. \rightarrow \left \{ {{x = 35 - 5y} \atop {3(35 - 5y) + 2y = 27}} \right. \rightarrow \left \{ {{x = 35 - 5y} \atop {y = \frac{78}{13} = 6}} \right. \rightarrow \left \{ {{x = 5} \atop {y = 6}} \right$