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OpenStudy (anonymous):
a
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OpenStudy (lgbasallote):
which do you think?
OpenStudy (lgbasallote):
hmm where did you distribute here?
OpenStudy (lgbasallote):
hint:
you're going to turn a - 2b + 2a
into a + 2a - 2b
OpenStudy (lgbasallote):
so what's happening?
OpenStudy (perl):
you want to collect like terms, so on the left side, we have that 2b in between the a's
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OpenStudy (lgbasallote):
why would you think that
OpenStudy (lgbasallote):
it's the right answer actually..i just want to know if you know why
OpenStudy (lgbasallote):
it's commutative
OpenStudy (perl):
you need to use the commutative property to collect like terms on the left side.
OpenStudy (lgbasallote):
because you're changing the order
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OpenStudy (perl):
you can think of commutative property as switching the order of two terms (one pair at a time)
OpenStudy (lgbasallote):
a - 2b + 2a becomes a + 2a - 2b...different order right?
OpenStudy (perl):
lg, what do you do after you get
3a -2b = 3a - 2b ?
OpenStudy (lgbasallote):
btw it's LGBASALLOTE
OpenStudy (perl):
im not sure what this question is asking, to simplify further ... go on
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OpenStudy (lgbasallote):
i think it's just asking how the LHS can look lie RHS
OpenStudy (lgbasallote):
like*
OpenStudy (perl):
ok, then it's an identity
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