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March 30, 2017

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7(4 - t) = -84
i got:
28 - 7t = -84
-28 = -28
7t = -112
----- -----
7 = 7
t = -16

is this right : -16

  • algebra check please - ,

    Here's your mistake:

    7t = -112

    It should be
    -7t = -112

    t = +16

  • algebra check please - ,

    oh ok i see thanks can you check another:
    -5.5 (8+b) = -33
    i got:
    -44 + -5.5b = -33
    +44 +44
    __________________
    -5.5b = 11
    ___________
    - 5.5 = 5.5
    b = -2

  • algebra check please - ,

    Right!

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