解设买香蕉x千克,苹果y千克则3x+5y=50-14即3x+5y=36x=0时,y=36/5x=1时,y=33/5x=2时,y=6x=3时,y=27/5x=4时,y=24/5x=5时,y=21/5x=6时,y=18/5x=7时,y=3x=8时,y=12/5x=9时,y=9/5x=10时,y=6/5x=11时,y=3/5x=12时,y=0即有x...