解下二元一次方程组和三元一次方程组
写出答案即可
(1)3m+b=11(2)0.6x-0.4y=1.1(3)4f+g=15
-4m-b-110.2x-0.4y=2.33g-4f=-3
(4)1/2X+3Y=-6(5)4(x-y-1)=3(1-y)-2
1/2X+Y=2x/2+y/3=2
(6)2(x-y)/3-(x+y)/4=-1
6(x+y)-4(2x-y)=16
(7)3x-y+z=3
2x+y-3z=11
x+y+z=12
(8)5x-4y+4z=13
2x+7y-3z=19
3x+2y-z=18
乱了
(1)3m+b=11(2)0.6x-0.4y=1.1(3)4f+g=15
···-4m-b-11··0.2x-0.4y=2.3··3g-4f=-3
(4)1/2X+3Y=-6(5)4(x-y-1)=3(1-y)-2
··1/2X+Y=2···x/2+y/3=2
(6)2(x-y)/3-(x+y)/4=-1
···6(x+y)-4(2x-y)=16
(7)3x-y+z=3
··2x+y-3z=11
··x+y+z=12
(8)5x-4y+4z=13
··2x+7y-3z=19
··3x+2y-z=18
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