解方程组:360/x-10=360/y① 360/x+6=360/y②
解方程组X+Y/2=3X-2Y=10+6X+Y/4
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 10(x-y)=3(x+y)+15 6(x+y)=4(2x-y)+16
解方程组①3x+5y=45②6x+6y=55
解方程组 9x+10y=1810 ① 12x+8y=1880 ②
解方程组{5x+2y=6 ① 2x+5y=8 ②
解方程组4x+7y=37①6x+3y②
方程组x-y=500① x+15%-(y-10%y)=950②
解二元二次方程组:{①(x-y+6)(2x+y-1)=0②(2x+3y+2)(3x-2y+1)=0
解方程组(x+y)/4-(2x-y)/3=-1 ① 6(x+y)-4(2x-y)=16 ②
解方程组2x+y+x=10 x+2y+z=-6 x+y+2z=8