方程组｛100x+10y+z=48(x+y+z) ｛x+z=y+3 ｛100x+10y+z=100z+10y+x+198 怎么解

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方程组｛100x+10y+z=48(x+y+z) ｛x+z=y+3 ｛100x+10y+z=100z+10y+x+198 怎么解
方程组｛100x+10y+z=48(x+y+z) ｛x+z=y+3 ｛100x+10y+z=100z+10y+x+198 怎么解

方程组｛100x+10y+z=48(x+y+z) ｛x+z=y+3 ｛100x+10y+z=100z+10y+x+198 怎么解
100x+10y+z=48(x+y+z).(1)
x+z=y+3.(2)
100x+10y+z=100z+10y+x+198,99x=99z+198,x=z+2.(3)
将③代入②：
y=2z-1
均代入①：
52x=38y+47z
52z+104=76z-38+47z
71z=142
z=2
代入得y=2z-1=3
x=y+3-z=4
∴(x,y,z)=(4,3,2)

方程组｛100x+10y+z=48(x+y+z) ｛x+z=y+3 ｛100x+10y+z=100z+10y+x+198 怎么解解方程组：X+Y+Z=100,10X+5Y+0.5Z=100 解方程组：{x(x+y+z)=6 {y(x+y+z)=9 {z(x+y+z)=10 100x+10y+z=27(x+y+z) x+z=y+1 100z+10y+x-100x-10y-z=99 解方程组100x+10y+z=27(x+y+z) x+z=y+1 100z+10y+x-100x-10y-z=99 .急. 方程组｛5x+8y+12z=100 x+y+z=14 方程组｛5x+8y+12z=100x+y+z=14 x+y+z=11 100z+10y+x-100x+10y+z=693 100x+10z+y-100x+10y+z=54解方程组方程组 3X-Y+Z=10 X+2Y-Z=6 X+Y+Z=12 x+y-z=5,2x+3y+z=10,x-2y-z=20求方程组方程组3x+y+2z=10,2x+3y-z=9,x+y+z=6 解方程组：3x+7y+z=31.5,4x+10y+z=42求 x+y+z 方程组X+Y+Z=15,X+5Y+10Z=70求X,Y,Z 方程组X+Y+Z=15,X+5Y+10Z=70求X,Y,Z 解三元一次方程组,100x+10y+z=27(x+y+z) {x+y-z=1 (100z+10y+x)-(100x+10y+z）=99 解方程组 x:y:z=3:4:5,x+2y+z=48 方程组x:y:z=3:4:5 x+2y+z=48的解解不定方程组x+y+z=100,10x+9y+z=300.(答案有解析最好.) 解方程组：15X+9Y+Z=100 X+Y+Z=100 方程组x+y+z=14,12x+8y+5z=100,