Of the four expressions presented here, which two are equivalent?
Expression I: 6n + 5
Expression II: 2n + 5 + n + 3n
Expression III: 5n + 5
Expression IV: 11n
I and II
II and III
III and IV
I and IV

- anonymous

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- anonymous

Its Either B Or D. My Choice Was D But I Wanna Make Sure

- anonymous

@paki

- anonymous

@pooja195

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## More answers

- welshfella

simplify the second one.
bring like terms together
2n + 3n + n = 5 = ?

- anonymous

@paki

- anonymous

welshguy. so it is B Not D?

- welshfella

what is 2n + 3n + n

- anonymous

I DUNNO THATS WHY IM ASKING XD

- anonymous

5n + n?

- welshfella

you are getting there
what is 5n + n ?

- anonymous

5n.

- welshfella

if i have 5 cats and i get another cat how many acts have i got?

- welshfella

* cats lol

- anonymous

2n + 5 + n + 3n is what it is.. not what ur putting

- anonymous

so if i simplifiy what i put it becomes 5n + 5 + n

- welshfella

suppose n stands for a cat
5 cats + 1 cat = 6 cats
5n + n = 6n

- welshfella

you can add all the n's together.

- anonymous

but it doesnt tell you n = 1.. you cant add n and assume its gonna make 5n 6n

- welshfella

n is the same as 1n

- welshfella

n + n = 2n
n + 5n = 6n

- welshfella

1n + 5n = 6n

- anonymous

so then its A?

- welshfella

yes

- anonymous

how u said its 6n alone not 6n + 5n

- anonymous

Expression I: 6n + 5

- anonymous

A = expression 1 and expression 2.

- welshfella

you can only add LIKE terms
n and 2n and 3n all have n in them they are like terms
5 is different

- welshfella

yes thats right

- anonymous

yeah. 5 is not a like term. so where did the 5 come from.

- welshfella

It didn't come from anywhere its just there

- anonymous

how is it there. how did it get there.

- anonymous

you said it was 6n not 6n + 5

- anonymous

so how did the 5 get there...

- welshfella

It might help to think of n as a box of apples and the 5 as 5 apples
so 2n + 5 is
|dw:1440789153532:dw|

- welshfella

2 boxes of apples + 5 apples
2n + 5

- anonymous

your not getting it.. an example isnt gonna help. where did the 5 come from. your not explaining hat.

- anonymous

that* not hat.

- welshfella

the 5 are 5 apples

- anonymous

...
thats not an answer.

- anonymous

where.

- anonymous

did.

- anonymous

the 5.

- anonymous

come from

- anonymous

saying the 5 apples isnt really telling me.

- welshfella

I'm afraid its you who's not getting it my friend

- anonymous

how so. care to explain how im not getting it?

- welshfella

would you prefer chocolates, or coconuts - it could be 5 anything?
lets put it this way . Most people understand this argument. I think you are kidding me on.

- anonymous

Expression I: 6n + 5
Expression II: 2n + 5 + n + 3n

- anonymous

i read the wrong one forgive me xD. i get it now 2n + 3n = 5n. 5n + n = 6n. then the 6n + 5 is whats left over.

- welshfella

simplify I gives II

- welshfella

ok

- anonymous

i know. like i said after simplifying Expression I: 6n + 5
Expression II: 2n + 5 + n + 3n 2n + 3n + 5n + n + 6n.

- anonymous

then it leave 6n + 5

- anonymous

therefore expression 2 simplified = expression 1

- welshfella

this analogy with apples , cats or whatever may be a bit childish but it very often is the key to understanding for most people.
yes

- anonymous

\[3 n+2 n+n+5=6 n+5 \]

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