12y+9z=x,6(y+1/4)+9z=x,y+z=x

12y+9z=x,6(y+1/4)+9z=x,y+z=x 三元一次方程组(1)x-2y=-9 y-z=3 2z+x=47 (2)3x-y+z=4 2x+3y-z=12 x+y+z=6 三元一次方程组,1.x-2y+z=9 2x+y+3z=10 3x+2y1.x-2y+z=92x+y+3z=103x+2y-z2.3x-5y+2z=14x+5y-z=5X-5y+3z=-23.7x+2y-z=76x-y+z=74x+3y+z=94.4x+3y-2z=-75x-6y+z=12x+z=-25.2x+3y-4z=-23x-2y+5z=262x+5z=31 ..1.x+y+z=26,2.4y+3z=7,y-z=1,3x+2z=17,x+2y-z=18 9x-7y=173.x-7y+3z=17 4.2x+4y+3z=95x-6y-z=24 3x-2y+5z=113x+7y-2z=1 5x-6y+7z=131.x+y+z=26,y-z=1x+2y-z=18 2.4y+3z=7,3x+2z=11,9x-7y=17 3.x-7y+3z=17 5x-6y-z=24 3x+7y-2z=14.2x+4y+3z=93x-2y+5z=11 5x-6y+7z=13 1.x - 5y -3z =3 2.4x+9y=12 3.3x-y+2z=3y+4z=3 3y-2z=1 2x+y-3x=112x - z=1 2x+6z=3 x+y+z=12 解方程组：{x(x+y+z)=6 {y(x+y+z)=9 {z(x+y+z)=10 解下列三元一次方程组（1）x-2y=-9 y-z3 2z+x=47(2)3x-y+z=4 2x+3y-z=12 x+y+z=6 问5道3元一次方程组题目(1） y=2x-7{ 5x+3y+2z=23x-4z=4 (2) 4x+9y=12{3y-2z=17x+5z=19/4(3）4x-9z=17{3x+y+5z=18x+2y+3z=2(4) 2x+4y+3z=9{3x-2y+5z=115x-6y+7z=13(5) x:y=3:2{y:z=5:4x+y+z=66 数学题在线解答：三元一次方程组；(1)X+Y+Z=0,4X+2Y+Z=0,Z=2;(2)9X+3Y+Z=0,X-Y+Z=0,Z=-3,(3)4X+2Y+Z=5,4X-2Y+Z=1Z=-1;(5)5X+2Y+Z=12,4X+3Y+Z=13,Z=3 4x+9y=12 3y-2y+5z=11 5x-6y+7z=13 求：x y z等于多少 解方程组2x+y-3z=1,x-2y+z=6,3x-y+2z=9求x,y,z的值解方程组6x+y-z=0,3x-y+z=5,y+2z=4求x,y,z的值 真的实在解不出来,希望你能帮帮忙! 3Q一定要有过程.1】 x-2y= ─9 2】3x-y+z=4 3】y=2x-7 4】4x+9x=12 y-z=3 2x+3y-z=12 5x+3y+2z=2 3y-2z=1 2z+x=47 x+y+z=6 3x-4z=4 7x+5z=4/19 4】x：y=3：2 5】x+y+z=26 6】x+y=3 7】x-y-z=2 y：z=5：4 x-y=1 y+z=5 y-z-x= ─5 x+y+z=66 2x-y+z=18 3元1次方程x-2y=-9 3x-y+z=4{ y-z=3 { 2x+3y-z=122z+x=47 x+y+z=6 三元一次方程x+y+z=0 4x+2y+z=3 9x+3y+z=6x+y+z=04x+2y+z=3 9x+3y+z=6 (1)x-2y=-9,y-z=3,2z+x=47.(2)3x-y+z=4,2x+3y-z=12,x+y+z=6.(3)x+2y=4,2x+3x=13,3y+z=6.(4)5x+6y+2z=80,4x-3y+z=16,3x-2y+6z=92.(5)x:y=5:3,x:z=7:2,x-3y+3z=4每个都是方程组，我不会打大括号顺便告诉我方法是什么 （3）的方程打错了 x-2y=-9 3x-y+z=4 y-z=3 2x+3y-z=12 2z+x=47 x+y+z=6 这是七年级下册数学114页的题目,求解!x-2y=-9 3x-y+z=4 y-z=3 2x+3y-z=12 2z+x=47 x+y+z=6要过程！！好的提高悬赏！！快！！速度！！ {x+y+z=0 {4x+2y+z=3 {9x+2y+z=6 {x+y+z=0 4x+2y+z=3 9x+3y+z=6