exam Maths Puzzle Numerical Ability

solve for x:
log2^(x+4) - log2^(x-4) = log2^5

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exam Other Question

One fourth of a number is two more than one fifth of the number. Find the number. Graphing absolute value inequalities. Could I have a step-by-step and reason why, PLEASE?

Abs. (2b - 5) > 8
Thanks.