book Maths Puzzle Numerical Ability

-4(2x-3)= 8x+5

Solve for x and check your result

Thanks.

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book Other Question

well my problem is...i dont even know where to start when doing these word problems...im easily confused when it comes to these types of problems...what can i do? I need help solving this equation:

{{{9x^(-4/3)+32x^(-2/3)=16}}}

At first I tried substituting y for {{{x^(-2/3)}}} so I ended up with {{{9y^2+32y-16=0}}}. I ended with y= 4/