On sections 2.3, 2.4, and 2.5. Due Wednesday, October 10.
§2.3. B15, B17, B34, B35, B44, B45, B46, B47
§2.4. B13, B29, B30, B31, B32
§2.5. B6, B15, B16, B17, B18, B25, B26
Homework 6
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2 Comments
on 2.5 #15, (i/j+k/m)/jm and you still have to add two rationals to prove adding two rationals?
You have the right idea. (I think I need to correct your equation slightly).
$\frac{i}{j}+\frac{k}{m}=\frac{im+jk}{jm}$
This proves that the sum of two rational numbers is again rational (because the right side is also the ratio of two integers, and its denominator is again nonzero). That’s all you need to say!