exam Maths Puzzle Numerical Ability

Solve and check for X:

(x/12)-(1/6)=[(2x-7)/12]

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exam Other Question

Please help to solve this one.

Solve:

2x+5/2x+3 = x+3/x-1

thanks! Could you help me with this problem?

What is the period and graph of y=2 cot(x+ pie over 2)?

Thank you very much for your help!

Sarah McGuire