数学若X/2=Y/3=Z/5,且3X+2Y
若X/2=Y/3=Z/5,且3X+2Y-Z=,求X,Y,Z的值
设：X/2=Y/3=Z/5=k 得： x=2k,y=3k,z=5k 3X+2Y-Z=14 6k+6k-5k=14 7k=14 k=2 得：x=4 y=6 z=10