解方程组x-4/3=y+1/4=z+2/5 x-2y+3z=30
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解方程组x-4/3=y+1/4=z+2/5x-2y+3z=30解方程组x-4/3=y+1/4=z+2/5x-2y+3z=30解方程组x-4/3=y+1/4=z+2/5x-2y+3z=305y+5=4z
解方程组x-4/3=y+1/4=z+2/5 x-2y+3z=30
解方程组x-4/3=y+1/4=z+2/5 x-2y+3z=30
解方程组x-4/3=y+1/4=z+2/5 x-2y+3z=30
5y+5=4z+8,z=(5y-3)/4
3y+3=4x-16,x=(3y+19)/4
(3y+19)/4 - 2y + 3(5y-3)/4 =30,解得y=11,x=13,z=13
x−43=y+14=z+25①x−2y+3z=30②,
由①可设x−43=y+14=z+25=k,
x=3k+4,y=4k-1,z=5k-2,
代入方程②得,3k+4-2(4k-1)+3(5k-2)=30,
去括号得,3k+4-8k+2+15k-6=30,
解得k=3,
所以x=3×3+4=13,
y=4×...
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x−43=y+14=z+25①x−2y+3z=30②,
由①可设x−43=y+14=z+25=k,
x=3k+4,y=4k-1,z=5k-2,
代入方程②得,3k+4-2(4k-1)+3(5k-2)=30,
去括号得,3k+4-8k+2+15k-6=30,
解得k=3,
所以x=3×3+4=13,
y=4×3-1=11,
z=5×3-2=13,
因此,这个方程组的解是x=13y=11z=13.
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