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Q: Difference of eight times a number and twice the number?

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One number is eight more than twice another if their difference is 25. The larger number is 42

It's an example of converting something easy into something nearly impossible, and then expressing it obscurely. Behind the veil lies an almost trivial algebra exercise. Although the question doesn't ask for the solution to the exercise, here it is anyway, at no extra cost: -- The difference between (eight times a number) and (twice the number) is (six times the number). -- (Six times the number) is eighteen. -- (the number) is one-sixth of eighteen, or three.

pnis

|5n - 2n|

18

It is 3*n - 5

Twenty more than twice a number is 52

2 x = 8 + 4x

It is 5n - 8 <= 2n + 10

twice a number means a number times 2

4*(2x + 8) = 32

2x - 16 = 3x/18

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