方程组0.2x+4y=28.6 4x-y=5

方程组0.2x+4y=28.6 4x-y=5 方程组x-2y=8,3x-4y=5,x=?,y=? 解方程组：（0.2x+0.1y）/2- （4x-y）/10=（x-y）/5+ (3x+0.5y)/30 (3x+2y-1 已知方程组:5x+y=3 ; ax+5y=4与方程组x x+y/2+x-y/3=6,4(x+y)-5(x-y)=2用加减消元法解方程组 解方程组:{二分之x+y+二分之x-y=6,4(x+y)-5(x-y)=2() 3(x+y)+2(x-y)=36 4(x+y)-5(x-y)=2 解方程组 解方程组 {(x+y)/2+(x-y)/3=6 5(x+y)-2(x-y)=4 解方程组：x+y/2+x-y/3=6 4(x+y)-5(x-y)=12 解方程组 {3(x+y)-4(x-y)=11 {2(x-y)+5(x+y)=27全过程、快 解方程组 X+Y/2+X-Y/3=6 4[X+Y]-5[X-Y]=2 解方程组 {3(x+y)-4(x-y)=11 {2(x-y)+5(x+y)=27