book Maths Puzzle Numerical Ability

Solve for X

2x - (2x)/7 = x/2 + 17/2

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book Other Question

OK I need to simplify this question

x-2 / 3x-2y
*times*
9x^2-4y^2 / 2x^2+x-10

A) 3x-2y / 7x+1
B) 3x+2y / 2x-5
C) 3x+2y / 2x-5
D) 3x^2+2y^2 / 2x+5

Thanks! x^2+xy-y^2
__________
x+y

when x=6 and y=-2