Question

3х+2у/2+3х+5у/5=-2;х+у=-1

Answer 1

y=5-3x

(x+2)/5+y/2=-1

(x+2)/5+(5-3x)/2=-1

2x+4+5(5-3x)=-10

-13x=-39

x=3

y=-4 ВОТ ТАК