若|x+2y-6|+(x-y-3)2=0,则2x-3y=______.
∵|x+2y-6|+(x-y-3)2=0,
∴x+2y-6=0,x-y-3=0,
即x+2y=6① x-y=3②
①-②得:3y=3,
解得:y=1,
把y=1代入②得:x-1=3,
解得:x=4,
∴2x-3y=2×4-3×1=5,
故答案为:5.
若|x+2y-6|+(x-y-3)2=0,则2x-3y=______.
∵|x+2y-6|+(x-y-3)2=0,
∴x+2y-6=0,x-y-3=0,
即x+2y=6① x-y=3②
①-②得:3y=3,
解得:y=1,
把y=1代入②得:x-1=3,
解得:x=4,
∴2x-3y=2×4-3×1=5,
故答案为:5.