X+Y=76 X-Y=40 求Y=?X=?
3个回答
(X+Y)-(X-Y)=76-40
X+Y-X+Y=36
2Y=36
Y=18
X=58
相关问题
2X+Y=80 2y+X=76 X 和Y 是多少
y-x=x-4 y-x=40-y
x+y=x—y=40
2x+3y=58 2x+2y=76
X+Y=40,(X*Y)/(X+Y)=7.5
x+2x=y+3y=40+x+y
0.5x+0.7y=35,x+0.4y=40.求x=?,y=?
(X+65)÷8=Y Y+40=X X=?Y=?
求圆x²+y²-10x-10y=0 与 x²+y²-6x+2y-40=0 的公共
x+y/3+x-y/2=6 4(x+y)-2(x-y)=40