Posted by **marko** on Monday, October 1, 2012 at 10:48pm.

help i am stuck :

-8 - 5y = 12 - 9y

i got:

-8-12 -5y = 12-12 - 9y

-20 - 5y = 9y

-20 +20 - 5y - 9y

im so stuck idont understand this one can you please help me

- algebra check please -
**Ms. Sue**, Monday, October 1, 2012 at 10:55pm
-8 - 5y = 12 - 9y

-5y + 9y = 12 + 8

4y = 20

y = 5

- algebra check please -
**marko**, Monday, October 1, 2012 at 11:02pm
thanks and to check

-8 -5(5) = 12 -9 (5)

-8-25 = 12 - 45

-33 = -33 true

thanks

got time for 1 more -- please :)

8 - 3 (p-4) = 2p

i got:

8 - 3p - 12 = 2p

now im stuck

- algebra check please -
**Ms. Sue**, Monday, October 1, 2012 at 11:06pm
You're welcome.

8 - 3 (p-4) = 2p

8 - 3p + 12 = 2p

20 = 2p + 3p

20 = 5p

4 = p

You seem to be forgetting that multiplying two negative numbers produces a positive number. Watch your signs!

- algebra check please -
**marko**, Monday, October 1, 2012 at 11:06pm
wait i think i got it:

8 - 3p -12 = 2p

12 + 8 = 20

20 - 3p = 2p

+3p = +3p

20 = 5p

-------------

5 5

4 = p is that right

- algebra check please -
**Ms. Sue**, Monday, October 1, 2012 at 11:08pm
Yay! You've got it!

- algebra check please -
**marko**, Monday, October 1, 2012 at 11:12pm
thank you i really glad you cheked my work i feel better now. its clicking

thanks and good night

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