已知I4x+3y-5I+Ix-2y-4I=0,求x,y的值

已知I4x+3y-5I+Ix-2y-4I=0,求x,y的值


∵I4x+3y-5I≥o
Ix-2y-4I≥o
有∵I4x+3y-5I+Ix-2y-4I=0
∴I4x+3y-5I=Ix-2y-4I=0
∴4x+3y=5 x-2y=4
解方程組得:x=2 y=-1