book Maths Puzzle Numerical Ability

14x-2/(x-3) = 9x+8/-2

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book Other Question

Solve for X: 5(X + 2) - 7 (2X - 3) = 22
A) -1 B) -3/2 C) 3/2 D) 1
Please could somebody check this out.Solve the equation to find x in terms of s and t,in simplest form.(Assume that 3s-t is not =0)
3s(x-3s)=t(x-t)
I have arrived at x=3s-t. Is this correct?