若2X+5Y=3,则4^x*32^Y=( ) 主要是32^y怎么等于2^5y
若2X+5Y=3,则4^x*32^Y=( ) 主要是32^y怎么等于2^5y
若(x-y)/(x+y)=3 则(x+2y)/(6x-7y)等于
已知(2x+3y-18)+|4x+5y+32|=0,则4x-3y等于?
x/4+2等于x,x=多少.y/5等于y-3,Y=多少
4x+5y=105,2x+3y=178,x,y等于
若5x+3y=3x+4y=x+2y+6,则x+y=___
3(x+y)-4(x-y)=11,2(x-y)+5(x+y)=27
若x/y=4/3 则3x+2y/2x-5y=
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
设x>1,y>0,若x^y+x^-y=2根号2,则x^y-x^-y等于
若x-2y=-3则5-2x=4y等于
若3x-5y=0,则x+y/x=(),x-y/y=(),2x-3y/2x+3y=( )