Решить систему ленейных уровненений способ подстановки

1) $\left \{ {{4x+3y=2} \atop {x-4y=-9}} \right. \left \{ {{4(4y-9)+3y=2} \atop {x=4y-9}} \right. \left \{ {{x=4y-9} \atop {16y-36+3y=2}} \right. \left \{ {{x=4y-9} \atop {19y=38}} \right. \left \{ {{x=4*2-9} \atop {y=2}} \right. \left \{ {{x=-1} \atop {y=2}} \right.$

2) $\left \{ {{3x-2y=16} \atop {x+4y=-4}} \right. \left \{ {{3(-4-4y)-2y=16} \atop {x=-4-4y}} \right. \left \{ {{x=-4-4y} \atop {-12-12y-2y=16}} \right. \left \{ {{x=-4-4y} \atop {-14y=28}} \right. \left \{ {{x=-4-4*(-2)} \atop {y=-2}} \right.$ $\left \{ {{x=4} \atop {y=-2}} \right.$