几道解方程组的题.火速!1.3m+b=11-4m-b=112.0.6-0.4y=1.10.2x-0.4y=2.33.4f+g=153g-4f=-34.1/2+3y=-61/2+y=25.4(x-y-1)=3(1-y)-2x/2+y/3=26.2(x-y)/3-x+y/4=-16(x+y)-4(2x-y)=16例如 把……带入……得……
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![几道解方程组的题.火速!1.3m+b=11-4m-b=112.0.6-0.4y=1.10.2x-0.4y=2.33.4f+g=153g-4f=-34.1/2+3y=-61/2+y=25.4(x-y-1)=3(1-y)-2x/2+y/3=26.2(x-y)/3-x+y/4=-16(x+y)-4(2x-y)=16例如 把……带入……得……](/uploads/image/z/3698657-17-7.jpg?t=%E5%87%A0%E9%81%93%E8%A7%A3%E6%96%B9%E7%A8%8B%E7%BB%84%E7%9A%84%E9%A2%98.%E7%81%AB%E9%80%9F%211.3m%2Bb%3D11-4m-b%3D112.0.6-0.4y%3D1.10.2x-0.4y%3D2.33.4f%2Bg%3D153g-4f%3D-34.1%2F2%2B3y%3D-61%2F2%2By%3D25.4%28x-y-1%29%3D3%281-y%29-2x%2F2%2By%2F3%3D26.2%28x-y%29%2F3-x%2By%2F4%3D-16%28x%2By%29-4%282x-y%29%3D16%E4%BE%8B%E5%A6%82+%E6%8A%8A%E2%80%A6%E2%80%A6%E5%B8%A6%E5%85%A5%E2%80%A6%E2%80%A6%E5%BE%97%E2%80%A6%E2%80%A6)
几道解方程组的题.火速!1.3m+b=11-4m-b=112.0.6-0.4y=1.10.2x-0.4y=2.33.4f+g=153g-4f=-34.1/2+3y=-61/2+y=25.4(x-y-1)=3(1-y)-2x/2+y/3=26.2(x-y)/3-x+y/4=-16(x+y)-4(2x-y)=16例如 把……带入……得……
几道解方程组的题.火速!
1.3m+b=11
-4m-b=11
2.0.6-0.4y=1.1
0.2x-0.4y=2.3
3.4f+g=15
3g-4f=-3
4.1/2+3y=-6
1/2+y=2
5.4(x-y-1)=3(1-y)-2
x/2+y/3=2
6.2(x-y)/3-x+y/4=-1
6(x+y)-4(2x-y)=16
例如 把……带入……得……
几道解方程组的题.火速!1.3m+b=11-4m-b=112.0.6-0.4y=1.10.2x-0.4y=2.33.4f+g=153g-4f=-34.1/2+3y=-61/2+y=25.4(x-y-1)=3(1-y)-2x/2+y/3=26.2(x-y)/3-x+y/4=-16(x+y)-4(2x-y)=16例如 把……带入……得……
1.1+2得 -M=22 M=-22
把M=-22带入1得 B=77
2 1-2得 0.4X=-1.2 X=-0.3
把X=-0.3带入1得 -0.18-0.4Y=1.1
Y=-0.32
3 1+2得 4G=18 G=4.5
把G=4.5带入1得 G=-3
4 1-2得 2Y=-8 Y=-4
把Y=-4带入1得 X=12
5 化简得:4X-Y=5 3X+2Y=12
1乘2得 8X-2Y=10 2+3得 X=2
把X=2带入1得Y=3
6 化简得 4X+5Y=12 -2X+10Y=16
2乘2得 -4X+20Y=32
3+1得25Y=48 Y=48/25
把Y=48/25带入1得 X=3/5