解方程组 2x/3+3y/4=1/5,5x/6-5y/2=2
1/2x-2y=-74,x-6y=-12解方程组,x/5-y/2=2,2x+3y=4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]=2
解方程组:x+y/2+x-y/3=6 4(x+y)-5(x-y)=12
2+3x/5+4y=9,4+6y-y=1解方程组
解方程组{x/3+y/2=1/6、y/3-x/4=-5/6
解二元一次方程组:{5(x+y)+3(x-y)=2{7(x+y)-3(x-y)=-6
3(x+y)+2(x-y)=36 4(x+y)-5(x-y)=2 解方程组
解方程组{(x-2)(y+3)=(x+1)(y-1) {(x+1)(y+1)=(x-1)(y+5)
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 {3(x+y)-4(x-y)=11 {2(x-y)+5(x+y)=27全过程、快
解方程组 {3(x+y)-4(x-y)=11 {2(x-y)+5(x+y)=27