Решите систему уравнений методом подстановки -x+2y=4 7x-3y=5 срочно

Решите задачу:

$\left \{ {{x+2y=4} \atop {7x-3y=5}} \right. \; \left \{ {{x=4-2y} \atop {7(4-2y)-3y=5}} \right. \; \left \{ {{x=4-2y} \atop {28-14y-3y=5}} \right. \; \left \{ {{x=4-2y} \atop {-17y=-23}} \right. \\\\ \left \{ {{x=4-2y} \atop {y=\frac{23}{17}}} \right. \; \left \{ {{x=4-\frac{46}{17}} \atop {y=\frac{23}{17}}} \right. \; \left \{ {{x=\frac{22}{17}} \atop {y=\frac{23}{17}}} \right. \; \left \{ {{x=1\frac{5}{17}} \atop {y=1\frac{6}{17}}} \right. \\\\Otvet:\; \; (1 \frac{5}{17} ; 1\frac{6}{17} )\; .$