FDPS Ch4 #3

[Wai MingL504]

In FDPS Ch4 problem set #3 what do u mean by "multiplying or dividing the numerator and denominator of a fraction by the same number will not change the value of fraction?" Can you illustrate the calculation again? Thanks!

[RonPurewal]

those words are referring to the idea that you can multiply a fraction by 2/2, or by 3/3, or by √2/√2, or by whatever/whatever, and the value will still be the same.

this idea is primarily involved with making common denominators (e.g., if you want to add 1/2 and 1/3, you have to multiply 1/2 by 3/3 and 1/3 by 2/2, giving 3/6 + 2/6 = 5/6), although it also appears here and there in other contexts.

[RonPurewal]

if you have a question about a particular item that's in the guide, please post the entire question exactly as originally written (including answer choices, if there are any), as per the forum rules.

also, please read the forum rules (first post in every folder) before posting. thanks.