" If "P(X=x)=(x-5)/(4),x=5.5,6.5,7.5," then "

(x-5)(x-7)(x+4)(x+6)=504

(9x-5)/(7)=(6x+2)/(5)

In P=(5x+2y)/(3x-4y) , if x=5 and P=7, the y=?

if f'(x)=(x -4) (x-5) (x-6) (x-7) then.

If |(x,3,6),(3,6,x),(6,x,3)|=|(2,x,7),(x,7,2),(7,2,x)|=|(4,5,x),(5,x,4),(x,4,5)|=0 , then x is equal to a)9 b)-9 c)0 c)-1

If (5x)/2-1/4(6x-5/3) = 7/6 , then the value of x is _________

If (4x+8)/(5x+8) = 5/6 , then x = ?