Question

3y-8x=44 -8x-3y=20 решить систему арвнений методом сложения пж скажите умоляю!!!

Answer 1

$\left \{ {{3y-8x=44} \atop {-8x-3y=20}} \right. \; \to \; \left \{ {{-8x+3y=44} \atop {-8x-3y=20}} \right. \; \oplus \left \{ {{-8x+3y=44} \atop {-16x+0=64}} \right. \; \left \{ {{32+3y=44} \atop {x=-4}} \right. \\\\ \left \{ {{3y=12} \atop {x=-4}} \right. \; \left \{ {{y=4} \atop {x=-4}} \right.$