www.whkt.net > x+4/3=y+3/2=z+8/4,且x+y+z=12,求x,y,z的值?详细...

x+4/3=y+3/2=z+8/4,且x+y+z=12,求x,y,z的值?详细...

【如果x+4/3=y+3/2=z+8/4且x+y+z=12求x,y,z的值】k(x+y+z)+4k+3k+8k=912k+4k+3k+8k=927k=9k=1/3分别代入(1)(2)(3)得x=5y=3z=4x

已知X/2=y/3=z/4,试求x+y-z/x+y+z的值 要过程设x/2=y/3=z/4=k,所以x =2k,y=3k,z=4k,因为x+y+z=9k是作为分母,说明9k≠0,所以k≠0,所以原式=(2k+3k-4k

【已知x/2=y/3=z/4,且x+y-z=1/12,求x,y,z的值】设x=2a,y=3a,z=4a.则2a+3a-4a=1/12则a=1/12则x=1/6,y=1/4,z=1/3.

如果x/2=y/3=z/4,且x+y+z=5,那么x+z-y=?_百度知y=3k,z=4k,所以9k=5,k=5/9,x+z-y=2k+4k-3k=3k=3乘以5/9=5/3 交叉相乘,合并同类项得39y=8x

x+4/3=y+3/2=z+8/4,且x+y+z=12,求x,y,z的值回答:令a=(X+4)/3=(Y+3)/2=(Z+8)/4 x=3a-4 y=2a-3 z=4a-8 所以3a-4+2a-3+4a-8=12 9a=27 a=3 所以x=

已知x+4/3=y+3/2=z+8/4,且x+y+z=12,则x-y-z回答:x=5 y=3 z=4 结果等于-2 选B 有分得哦

+3=4分之Z+8且x +Y+z=12,求x,Y ,Z的值/2=(Z+8)/4得出X=3/2Y+1/2 Z=2Y-2再带入X+Y+Z=12得出3/2Y+1/2+2Y-2+Y=12得出Y=3再得出X=5 ,Z=4

【x\2=y\3=z\4x+y+z=18解方程组需要全部过程】X=4,Y=6,Z=8 解法一 由X/2=Y/3=Z/4得,设X/2=Y/3=Z/4=K 则Y=3K X=2K Z

已知X比2=Y比3=Z比5,且X+Y+Z=8求令 a=x/2=y/3=z/5所以x=2a,y=3a,z=5a则2a+3a+5a=810a=8a=4/5所以x=8/5y=

已知x+4/3=y+3/2=z+8/4,且x+y+z=12,则x-y-z的值是A2Bx=5 y=3 z=4 结果等于-2 选B 有分得哦

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