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25 December, 18:09

If (a,-5) is a solution to the equations 3a=-2b-7, what is a?

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Answers (2)
  1. 25 December, 19:55
    0
    a = 1

    Step-by-step explanation:

    Given : If (a,-5) is a solution to the equations 3a=-2b-7,

    To find : what is a

    Solution : We have given

    (a,-5) is a solution to the equations 3a=-2b-7,

    For a = a and b = - 5.

    3a = - 2 (-5) - 7.

    3a = 10 - 7.

    3a = 3.

    On dividing both side by 3.

    a = 1

    Therefore, a = 1
  2. 25 December, 20:40
    0
    Answer: 1

    Step-by-step explanation: You are starting with (a, b)

    (a, - 5) means that when b is - 5, a is a

    So substitute-5 into the equation for b and solve for a

    3a = - 2b - 7

    3a = - 2 (-5) - 7

    3a = 10 - 7

    3a = 3

    a = 1
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