exam Maths Puzzle Numerical Ability

Please help me solve this problem. add & simplify: 8/3x+7/6x^2

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exam Other Question

2x-5y=-6 2log(x) - log(x^2) + log(2/x) + log(x)

I tried to simplify as far as I could and came to:

log2 (x) + log(x)

I just want to know if this is the correct answer? If so, can it be simplified anymore?