lucy2001 lucy2001

23-09-2014
Mathematics

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ann has the 5 newest music CD's which is 3 less than twice the amount that Bob has.

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SlowZasob SlowZasob

23-09-2014

We can write it down as:

5 = 2x - 3 / + 3 (both sides)
8 = 2x / : 2 (both sides)
x = 4

Bob has 4 CDs. Let's check it:

5 = 2 * 4 - 3
5 = 8 - 3
5 = 5

Correct.

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