Posted by **EmilyMay** on Wednesday, November 28, 2012 at 9:31pm.

I understand how to multiply a polynomial by a monomial for example

6pq(3p^2+4q)= 18p^3q+24pq^2

but i dont know how to do problems like this

5(2s-1)+3=3(3s+2)

HELP PLEASE!!

- Algebra:'( -
**Ms. Sue**, Wednesday, November 28, 2012 at 9:34pm
5(2s-1)+3=3(3s+2)

10s - 5 + 3 = 9s + 6

s = 6 + 5 - 3

s = 8

- Algebra:'( -
**EmilyMay**, Wednesday, November 28, 2012 at 9:39pm
how did you get the 's' by its self?

- Algebra:'( -
**EmilyMay**, Wednesday, November 28, 2012 at 9:44pm
Did you take 9 and subtract it by 10 to get 1s but you just dropped the 1 because a variable always has and invisible 1?

- Algebra:'( -
**Ms. Sue**, Wednesday, November 28, 2012 at 9:46pm
Yes. I subtracted 9s from both sides.

- Algebra:'( -
**EmilyMay**, Wednesday, November 28, 2012 at 9:48pm
Ohhh kayy thanks i didnt see at first... Thank You!!

- Algebra:'( -
**Ms. Sue**, Wednesday, November 28, 2012 at 9:54pm
You're welcome. :-)

- Algebra:'( -
**EmilyMay**, Wednesday, November 28, 2012 at 9:56pm
just to be sure did i do this right?

3(3u+2)+5=2(2u-2)

9u+6+5=4u-4

5u=-15

5/5=-15/5

u=-3

- Algebra:'( -
**Ms. Sue**, Wednesday, November 28, 2012 at 9:57pm
Right.

- Algebra:'( -
**EmilyMay**, Wednesday, November 28, 2012 at 10:02pm
=)

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