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Posted by 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 - , Monday, October 1, 2012 at 10:55pm

    -8 - 5y = 12 - 9y

    -5y + 9y = 12 + 8

    4y = 20

    y = 5

  • algebra check please - , 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 - , 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 - , 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 - , Monday, October 1, 2012 at 11:08pm

    Yay! You've got it!

  • algebra check please - , 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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