二元一次方程加减消元法1.{3m+b=11 2.{0.6X+0.4y=11 3.{4f+g=15 4.{1/2X+3y=-6{-4m-b=11 {0.2X-0.4y=2.3 {3g-4f=-3 {1/2X+y=2 5.{3(X-1)=y+5 6.{2u/3+3X/4=1/2{5(y-1)=3(x+5) {4u/5+5X/6=7/15明天就交作业了...

问题描述:

二元一次方程加减消元法
1.{3m+b=11 2.{0.6X+0.4y=11 3.{4f+g=15 4.{1/2X+3y=-6
{-4m-b=11 {0.2X-0.4y=2.3 {3g-4f=-3 {1/2X+y=2
5.{3(X-1)=y+5 6.{2u/3+3X/4=1/2
{5(y-1)=3(x+5) {4u/5+5X/6=7/15
明天就交作业了...

:1.m=-22,b=77
3.f=3,g=3
4.x=12,y=-4
5.x=5,y=7
6.u=-3/2,x=2

小子不上路,自己不动脑经

1.m=-22,b=77
3.f=3,g=3
4.x=12,y=-4
5.x=5,y=7
6.u=-3/2,x=2