3元1次方程x/2=y/3=z/5 3x-y+2z=26

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3元1次方程x/2=y/3=z/53x-y+2z=263元1次方程x/2=y/3=z/53x-y+2z=263元1次方程x/2=y/3=z/53x-y+2z=26x/2=y/3=z/5➡

3元1次方程x/2=y/3=z/5 3x-y+2z=26
3元1次方程x/2=y/3=z/5 3x-y+2z=26

3元1次方程x/2=y/3=z/5 3x-y+2z=26
x/2=y/3=z/5➡y=3x/2,z=5x/2,代入3x-y+2z=26得3x-3x/2+2*5x/2=26➡x=4,所以y=3*4/2=6,z=5*4/2=10

x/2=y/3=z/5=a x=2a y=3a z=5a 带进后面的出a 紧接着可以算出x y z

x/2=y/3=z/5➡y=3x/2,z=5x/2,代入3x-y+2z=26得3x-3x/2+2*5x/2=26➡x=4,所以y=3*4/2=6,z=5*4/2=10