已知x/2=y/3=z/4且x+y+z=12求2x+3y+4z
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已知x/2=y/3=z/4且x+y+z=12求2x+3y+4z已知x/2=y/3=z/4且x+y+z=12求2x+3y+4z已知x/2=y/3=z/4且x+y+z=12求2x+3y+4zx/2=y/3
已知x/2=y/3=z/4且x+y+z=12求2x+3y+4z
已知x/2=y/3=z/4且x+y+z=12求2x+3y+4z
已知x/2=y/3=z/4且x+y+z=12求2x+3y+4z
x/2=y/3=z/4
x+y+z=12
x=8/3
y=4
z=16/3
2x+3y+4z=38+2/3
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