Question

$left { {{y=11-2x} atop {5x-4y=8}} right.$ решите пожалуйста! (Подробно распишите еще)


Answer 1

$left { {{y=11-2x} atop {5x-4y=8}} right. \\ left { {{y=11-2x} atop {5x-4(11-2x)=8}} right. \\ left { {{y=11-2x} atop {5x-44+8x=8}} right. \\ left { {{y=11-2x} atop {5x+8x=8+44}} right. \\ left { {{y=11-2x} atop {13x=52}} right. \\ left { {{y=11-2x} atop {13*x=13*4}} right. \\ left { {{y=11-2x} atop {x=4}} right. \\ left { {{y=11-2*4=11-8=3} atop {x=4}} right. \\ left { {{x=4} atop {y=3}} right.$

Ответ: $(4; 3)$