96 x-y= 36
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96 x-y= 36
96 x-y= 36
96 x-y= 36
x+y= 96 .1
x-y= 36.2
1式+2式得
2x=132
x=66
1式-2式得
2y=60
y=30
两式相加 得x=(96+36)/2=66
y=96-x=30
x+y= 96 1
x-y= 36 2
1+2
x=66
y=30
x+y= 96 ①
x-y= 36 ②
①+②得
2x=132
x=66
带入①得
y=30
96 x-y= 36
若(X×X+Y×Y)(X×X+Y×Y-5)=36,则X×X+Y×Y=
x+x+x+y=52 y+y+y+x=36求x
3(x+y)+2(x-y)=36 4(x+y)-5(x-y)=2
X+X+X+X+Y+Y+Y=36,X+X+Y+Y+Y=24,那么X=【】,Y等于【】.【】
Y+X+X=36 Y-X-X=8 X=?Y=?
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
化简 x / y(x+y) - y / x(x+y) =
x(x+y)(x-y)-y(y+x)(y-x)=(x-y)( )填空
x+2y=592x+y=36
y+x+2x=36
3x+3y+2x-2y=36 4x+4y-5x-5y=2
3(x+y)+2(x-y)=36,2(x+y)-3(x-y)=24
3(x+y)+2(x-y)=36,2(x+y)-3(x-y)=24 解二元一次方程
3(x+y)+2(x-y)=36 4(x+y)-5(x-y)=2 解方程组
x+x+y+y+y=21 ,x+x+y+y+y+y+y=27 ,x ,y=?
x+x+y+y+y=21 ,x+x+y+y+y+y+y=27 ,x ,y=?
y=x(x