How do you combine $(k+4) + (2-3k) + (6k-1)$ ?

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Answer 1 · 2015-05-23T13:23:07

Group you "kangaroos" (the $k$ 's) together and the simple numbers together and add the two collections separately.

$(k+4) + (2-3k) +(6k-1)$

$= (k-3k+6k) + (4+2-1)$

$= 4k +5$

How do you combine (k+4) + (2-3k) + (6k-1)(k+4) + (2-3k) + (6k-1)?