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Mathematics 16 Online
OpenStudy (anonymous):

Please assist me, 3a over a + b + 3b over a + b = 3a + 3b over a + b, this sum is in simplest form, true or false?

jimthompson5910 (jim_thompson5910):

Can you factor 3a+3b?

OpenStudy (anonymous):

Yes

jimthompson5910 (jim_thompson5910):

to get what?

OpenStudy (anonymous):

3ab

jimthompson5910 (jim_thompson5910):

not quite

jimthompson5910 (jim_thompson5910):

the terms 3a and 3b have what in common?

OpenStudy (anonymous):

3

jimthompson5910 (jim_thompson5910):

so we can use the distributive property in reverse to say 3a+3b turns into 3(a+b)

OpenStudy (anonymous):

OK so it's false, because it was just changed so it couldn't have been in simplest form.

jimthompson5910 (jim_thompson5910):

exactly

jimthompson5910 (jim_thompson5910):

well it's not in its simplest form because 3(a+b) over a+b simplifies to 3 since the "a+b" terms cancel

OpenStudy (anonymous):

Thank you.

jimthompson5910 (jim_thompson5910):

but you're on the right track

jimthompson5910 (jim_thompson5910):

you're welcome

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