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已知x+y/2=y+x/3=z+x/4,且2x+4y+6z=100,求x:y:z的值一会儿来看
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已知x+y/2=y+x/3=z+x/4,且2x+4y+6z=100,求x:y:z的值
一会儿来看
一会儿来看
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答案和解析
x+y/2=y+x/3
x+y/2=z+x/4
2x+4y+6z=100
变形得
6x+3y=6y+2x
4x+2y=4z+x
x+2y+3z=50
解得x=3/4y,z=17/16y,故
x:y:z=3/4y:y:17/16y=12:16:17
x+y/2=z+x/4
2x+4y+6z=100
变形得
6x+3y=6y+2x
4x+2y=4z+x
x+2y+3z=50
解得x=3/4y,z=17/16y,故
x:y:z=3/4y:y:17/16y=12:16:17
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