daniellerae9
Prove that if a, b, and c are real numbers, then la+b+cl<=lal+lbl+lcl



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Jemurray3
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Can you do it with just two numbers, like a+b <= a + b ?

daniellerae9
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Would it be basically the same proof?

Jemurray3
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Exactly the same, yes.

Jemurray3
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Can you prove it?

daniellerae9
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Ok, yeah I have that one from an example in class.

Jemurray3
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Well then it's the same thing. Think of it like
(a+b) + c <= (a+b) + c <= a + b + c

daniellerae9
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Oh, that is super easy then, thanks