x+y=x—y=40
1个回答
x+y=x-y
所以:
x-x=y+y
2y=0
y=0
x=40-y=40-0=40
所以:
x=40
y=0
相关问题
y-x=x-4 y-x=40-y
X+Y=40,(X*Y)/(X+Y)=7.5
x+2x=y+3y=40+x+y
X+Y=76 X-Y=40 求Y=?X=?
(X+65)÷8=Y Y+40=X X=?Y=?
x+y/3+x-y/2=6 4(x+y)-2(x-y)=40
x+y=160,40%x+75%y=60%*160 x=? y=?
怎摸算出来的x=32,y=40x=32,y=40x(1-25%)=y(1-40%)
( x²+y²-10x-10y=0 ,x²+y²-6x+2y-40=0 )
①40x=440+y!②30x=310+y