x+y/10+x/15=1x+y/12+y/15=1答案我知道X=3,Y=5
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x+y/10+x/15=1x+y/12+y/15=1
x.y都是自然数,且x(x-u)-y(y-x)+12,求x.y得值快1且x(x-y)-y(y-x)=12
已知|x|+x+y=10 |y|+x-y=12 求 x+y=?
已知|x|+x+y=10,|y|+x-y=12,求x+y的值
已知|x|+x+y=10,x+|y|-y=12,求x、y的值
(x+y)/6+(x-y)/10=1,(x+y)/6-(x-y)/10=5
{6/x+y+10/x-y=30 6/x+y-10/x-y=-1
10/x+y+3/x-y=-5 15/x+y-2/x-y=-1(用换元法解此方程组)
解分式方程:10/(x+y)+3/(x-y)=-5,15/(x+y)-2/(x-y)=-1
3/(X-Y)+10/(X+Y)=-5 2/(X-Y)-15/(X+Y)=1 解分式方程组
解方程组:(x+3)(y-2)=(x-3)(y+10),(x+1)(y+3)=(x-2)(y+12)
解方程:(x+3)(y-2)=(x-3)(y+10) (x-1)(y+3)=(x+2)(y+12)
X,Y是有理数 X+|X|+Y=10 |Y|+X-Y=12 求X+Y=多少?
已知实数x,y满足|x|+x+y=10、x+|y|-y=12,则x+y的值?
x y满足:x+/x/+y=10 /y/+x-y=12 求x+y的值 (/ /为绝对值)
[(y*y*y-y)/(xy+1)*(xy+1)-(x+y)*(x+y)]/[(x+y)*y/(x+1)]其中x=-11,y=1/12,化简再求值.
.m(x-y)²-x+y 5(y-x)²+3(x-y) 15*(a-b)²-3y(b-a) 6(m-n)³-12(n-m)²13/x-4-10/x-3=1/x-1
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2