解方程组:2x/3+3y/4=1/5 (1) 5x/6-5y/2=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-2)(y+3)=(x+1)(y-1) {(x+1)(y+1)=(x-1)(y+5)
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
解方程组:(0.2x+0.1y)/2- (4x-y)/10=(x-y)/5+ (3x+0.5y)/30 (3x+2y-1
解二元一次方程组 x+y=3 1/2(x+y)-3y=5
解方程组(1)x-4y=6 3x+4y=2 (2)3x+2y=-5 5x-8y=-31
解方程组2x-5/x-2+2y-3/y-1=2.3x-4y=1
解方程组:2(x-y)/3-x+y/4=-1 ,6(x+y)-4(2x-y)=16