book Maths Puzzle Numerical Ability

Problem goes like this.....

Solve equation.

log (x+5) - log (x-1) = log (x+2) - log (x-3)

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book Other Question

A computer and its monitor weigh a total of 48 pounds. If the monitor weighs twice as much as the computer, how much does each piece of hardware weigh? How many kilogram of fine glucose must be added to 25 kilograms of a 12% sweetened juice concentrate to prepare instead a light syrup 20% sweet?

I can't solve this problem. I ne