Question

Решите систему уравнений:

{ 2(3x - y)-5 = 2x-3y
{ 5-(x - 2y) = 4y+16

Answer 1

$left { {{2(3x-y)-5=2x-3y} atop {5-(x-2y)=4y+16}} right. \\ left { {{6x-2y-5=2x-3y} atop {5-x+2y=4y+16}} right. \\ left { {{4x+y=5} atop {-x-2y=11}|*4} right.\\ +left { {{4x+y=5} atop {-4x-8y=44}} right. \\-7y=49$
$y=-7\\4x-7=5\\4x=12\\x=3\\(3;-7)$

Answer 2

 спс