book Maths Puzzle Numerical Ability

(1) write each percent as a fraction or mixed numder in the simplest form.

320%.

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book Other Question

Solve for all Values of X.

(2X/X+3)+ (3/X-3) = 8/X2 -9) I have several problems out there. I am really having a hard time with logarithms. Here are a few problems that are giving me some trouble.
1. Use the change of base formula a