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Math Question?

Solve: (7a+3)+(-a-5)= -16

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10 Answers

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  • 1 decade ago
    Favorite Answer

    (7a+3)+(-a-5)= -16 => 6a-2= -16 =>6a=-14

    => a=-7/3

  • 1 decade ago

    (7a+3)+(-a-5)= -16

    Open the brackets,

    7a+3-a-5 = -16

    Add all liketerms,

    6a-2 = -16

    6a = -16 + 2 = -14

    a = -14 / 6 = -7/3...Ans

    ===========

  • 1 decade ago

    If you wrote the problem correctly, the answer is

    - 2.3333333333333333333333333333333

    Here is the proof;

    (7a + 3) + ( -a - 5) = -16

    6a + 2 = -16

    6a = -14

    a = -14 / 6

    a = -2.3333333333333333333333333333333

  • 1 decade ago

    First remove the parentheses

    7a + 3 + -a + -5 = -16

    Reduce

    6a + -2 = -16

    Now add 2 to each side

    6a = -14

    Divide both sides by 6

    a = 14/6

    Reduce

    a= -7/3 or -2 1/3 or -2.3333

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  • 1 decade ago

    (7a+3)+(-a-5)= -16

    7a + 3 -a - 5 = -16

    6a - 2 = -16

    6a = -14

    a = -14/6

    a = -7/3

    All the best

  • 1 decade ago

    (7a+3)+(-a-5)= -16

    7a + 3 -a - 5 = -16

    6a - 2 = -16

    6a = -14

    a = -14/6

    a = -7/3

  • Anonymous
    1 decade ago

    1. Collect terms:

    6a = -14

    2. Divide through by 6 and reduce.

    a = -7/3

  • 1 decade ago

    a= -7/3

  • 1 decade ago

    (7a+3)+(-a-5)= -16

    7a+3-a-5+16=0

    6a=-14

    a=-7/3

  • 1 decade ago

    (7a+3)+[-a-5]=-16

    7a+3-a-5=-16

    6a=-16-3+5

    6a=-14

    a=-14/6

    a=-7/3

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