If `((5)/(7))^(x-1) = ((7)/(5))^(x-5)`, then `x` is equal to
(a)3
(b) 0
(c) -1
(d) 2

If 5^(x)=7^(x+1) then x is equal to

If ( x- 3 )/5 - 2 = -1 , then x is equal to ( a ) 8 ( b) 3 ( c ) -7 ( d ) 2

If (x,3)+(2,5)=(7,8) then x is equal to a)2 b)5 c)7 d)9

If (x+(1)/(x))=2, then (x-(1)/(x)) is equal to (a) 0 (b) 1 (c) 2 (d) 5

If sin^(-1)((5)/(x))+sin^(-1)((12)/(x))=(pi)/(2), then x is equal to (7)/(13) (b) (4)/(3)(c)13 (d) (13)/(7)

If ((3)/(5))^(3)((3)/(5))^(-6)=((3)/(5))^(2x-1), then x is equal to a.-2b.-1c.1d.2, then x is

If [(2x+y,0),(5,x)] = [(5,0),(5,3)] then y is equal to (a) 1 (b) 3 (c) 2 (d) -1

If 2f(x)-3f((1)/(x))=x^(2)(x!=0), then f(2) is equal to (a)-(7)/(4)(b)(5)/(2)(c)-1 (d) none of these

If (x^(2)+(1)/(x^(2)))=34, then (x+(1)/(x)) is equal to (a)3(b)4(c)5(d) None of these is equal

If (x)/(y)=(6)/(5), then the value of ((6)/(7)-(5x-y)/(5x+y)) is equal to (a) (1)/(7)( b) (2)/(7)(c)(3)/(7) (d) (4)/(7)