Даны векторы a→4;-6{"color":"#202335","fontFamily":"stix","language":"ru"} и b→-2;3{"color":"#202335","fontFamily":"stix","language":"ru"}. Известно, что векторы c→=a→{"color":"#202335","fontFamily":"stix","language":"ru"}, а векторы c→xc;yc{"color":"#202335","fontFamily":"stix","language":"ru"} и b→{"color":"#202335","fontFamily":"stix","language":"ru"} противоположно направленные. Найдите xc+yc.{"color":"#202335","fontFamily":"stix","language":"ru"}
