解方程组:x/2+y/3=1 x*20%+y*30%=14*10%
解方程组:x/2+y/3=1 x*20%+y*30%=14*10%
解方程组:(0.2x+0.1y)/2- (4x-y)/10=(x-y)/5+ (3x+0.5y)/30 (3x+2y-1
解方程组:(x+3)(y-2)=(x-3)(y+10),(x+1)(y+3)=(x-2)(y+12)
解方程组X+Y/2=3X-2Y=10+6X+Y/4
解方程组{ 3x-4y(x-y)=3 { 2x-3y=1
解方程组:解方程组:|X+Y|=1|X|+2|Y|=3
用加减法解方程组:{(x+y)/6+(x-y)/10=3 (x+y)/6+(y-x)/10=-1
解方程组x+y/6+x-y/10=3,x+y/6+y-x/10=-1
解方程组{(x-2)(y+3)=(x+1)(y-1) {(x+1)(y+1)=(x-1)(y+5)
解方程组 2x+y(y-2x)=9 (x+y)(x+y-3)=10
解方程组 10(x-y)=3(x+y)+15 6(x+y)=4(2x-y)+16
数学书解方程组{2(x+y)-(x-y)=3,(x+y)-2(x-y)=1