解方程组 X+Y=500 (1+15%)X-(1-10%)Y=950
解方程组 X+Y=500 (1+15%)X-(1-10%)Y=950
解二元一次方程组,解方程组:x-y=500 (1+15%)x-(1-10%)y=950
x-y=500 (1+百分之15)x-(1-百分之10)y=950 方程组的解
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
10/x+y+3/x-y=-5 15/x+y-2/x-y=-1(用换元法解此方程组)
解方程组:(x+3)(y-2)=(x-3)(y+10),(x+1)(y+3)=(x-2)(y+12)
方程组x-y=500① x+15%-(y-10%y)=950②
解方程组 {x+y=150,x(1+15%)+y(1+10%)=170
xy=(x-10)(y+1) xy=(x-15)(y+3) 解方程组.
解方程组(1/X+Y)-(1/Y-X)=8/15,(5/X+Y)-5/Y=4
解方程组,√(x+1/y)+√(x-y-2)=4 2x-y+1/y=10