-x/2=y/3=z/4=3则3x+4y+6z的值是

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-x/2=y/3=z/4=3则3x+4y+6z的值是-x/2=y/3=z/4=3则3x+4y+6z的值是-x/2=y/3=z/4=3则3x+4y+6z的值是-x/2=y/3=z/4=3所以-x/2=3

-x/2=y/3=z/4=3则3x+4y+6z的值是
-x/2=y/3=z/4=3则3x+4y+6z的值是

-x/2=y/3=z/4=3则3x+4y+6z的值是
-x/2=y/3=z/4=3
所以-x/2=3 y/3=3 z/4=3
则x=-6
y=9
z=12
　　代入3x+4y+6z
　　=-18+36+72
　　=90

由-x/2=y/3=z/4=3得
x=-6 y=9 z=12
得出3x+4y+6z=90

-x/2=y/3=z/4=3
解得，x=-6、y=9、z=12
所以，
3x+4y+6z
=-18+36+72
=90

-x/2=y/3=z/4=3 则x=-6 y=9 z=12
故3x+4y+6z=3*(-6)+4*9+6*12=90

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