{2x-3y+5=2(3x-y)
{5-(4y+16)=x-2y
2x-3y+5=2(3x-y)
2x-3y+5=6x-2y
2x-6x-3y+2y=-5
-4x-y=-5
4x+y=5
y=5-4x
5-(4y+16)=x-2y
5-4y-16=x-2y
-4y+2y-x=11
-2y-x=11
2y+x=-11
{y=5-4x
{2y+x=-11
2(5-4x)+x=-11
10-8x+x=-11
-7x=-11-10
-7x=-21
x=3
y=5-4*3
y=5-12
y=-7
Ответ: х=3
у=-7