解方程:X+y+z=3.3 X/3+Y/4+Z/5=51/60 X/5+Y/4+Z/3=53.4/60X+y+z=3.3 (1)X/3+Y/4+Z/5=51/60 (2)X/5+Y/4+Z/3=53.4/60 (3)

来源：学生作业帮助网编辑：六六作业网时间：2024/12/23 23:57:06

解方程:X+y+z=3.3X/3+Y/4+Z/5=51/60X/5+Y/4+Z/3=53.4/60X+y+z=3.3(1)X/3+Y/4+Z/5=51/60(2)X/5+Y/4+Z/3=53.4/60

解方程:X+y+z=3.3 X/3+Y/4+Z/5=51/60 X/5+Y/4+Z/3=53.4/60X+y+z=3.3 (1)X/3+Y/4+Z/5=51/60 (2)X/5+Y/4+Z/3=53.4/60 (3)
解方程:X+y+z=3.3 X/3+Y/4+Z/5=51/60 X/5+Y/4+Z/3=53.4/60
X+y+z=3.3 (1)
X/3+Y/4+Z/5=51/60 (2)
X/5+Y/4+Z/3=53.4/60 (3)

解方程:X+y+z=3.3 X/3+Y/4+Z/5=51/60 X/5+Y/4+Z/3=53.4/60X+y+z=3.3 (1)X/3+Y/4+Z/5=51/60 (2)X/5+Y/4+Z/3=53.4/60 (3)
无非是化简
去分母得到方程组x+y+z=3.3(1)
20x+15y+12z=51(2)
12x+15y+20z=53.4(3)
(1)*20-(2)
(1)*12-(3)
得到两元一次方程组解得到y=0.6 z=1.5
最后得x＝1.2

解方程 x+y+z=0 4x+2y+z=3 9x-3y+z=28解方程x+y+z=04x+2y+z=39x-3y+z=28 解方程 x(x+y+z)=6 y(x+y+z)=12 z(x+y+z)=18 解方程:{x+y-3z=8,y+z-3x=4,z+x-3y=-12 解方程:{x+y-3z=-8,z+y-3x=-4,z+x-3y=12 解方程:{x+y-3z=8,y+z-3x=4,z+x-3y=-12 解方程：｛3x-y-z=2,｛3y-x-z=-10,｛3z-x-y=10 3x-y+z=3 2x+y-3z=11 x+y+z=12 解方程解方程 x+y+z=10,x+3y+2z=17,y-x+3z=8 解方程：x+z=y (1) ,7z-(x+y)=2 (2) ,x+y+z=14 (3) x+y/2=z+x/3+y=z/4,...x+y+z=27.解方程组.X+Y/2=Z+X/3=Y+Z/4,X+Y+Z=27.解方程解方程：{2x+3y+z=7,x+y+z=4,3x+y-z=-4{2x+3y+z=7,x+y+z=4,3x+y-z=-4要过程解方程：Y+Z-3X=3 Z+X-3Y=5 X+Y-3Z=6求x,y,z {x+y+z=4 {2y+z=0 {3x+2y-4z=-1解方程 X+3Y=2.3Y+Z=4.Z+3X=6解方程解方程：3x+2y+z=315 x+2y+3z=285 x+2y+3z=28 x：y：z=1：2：3 解方程解方程：｛ x/2=y/3=z/4 x+y+z=27 X-2Y =-9 Y-Z =3 2Z+X=47 方程解