(计算方程组x+y)/2=6-(x-y)/3,6(x+y)-5(x-y)=18
解二元一次方程组:{5(x+y)+3(x-y)=2{7(x+y)-3(x-y)=-6
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 {(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
方程组:40x=2乘25y x+y=36;2x+3y=15.5 5x+6y=35.用加减法计算,急用!
解方程组:{x+|3x-y|+3y=15 2x+y=6
解方程组X+Y/2=3X-2Y=10+6X+Y/4
y-3x=2,y-5x=4,y-7x=6,y-9x=8,y-11x=0方程组,
求x+y/3+x-y/2=6 3(x+y)-2(x-y)=28方程组的解
解下面方程组,x+y/3+x-y/2=6 3(x+y)-2(x-y)=28,
3/x+y+2/x-y=6,3(x+y)-2(x-y)=28解这个方程组