For the equation 2x + 7 =30, x = 3 O True O False

Question

For the equation 2x + 7 =30, x = 3
O True
O False

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Edana Edana 4 years 2021-09-04T05:51:32+00:00 2 Answers 14 views 0

Answers ( )

  1. ngochoa
    0
    2021-09-04T05:53:09+00:00
    Reply

    The answer is false
    Have a good day <3

  2. Helga
    0
    2021-09-04T05:53:22+00:00
    Reply

    Answer:  False

    =============================================================

    Explanation:

    To see if the x value is a solution or not, we plug it into the equation given

    2x+7 = 30 …. original equation

    2*3 + 7 = 30 …. replace every x with 3, since we claim that x = 3

    6 + 7 = 30 …. multiply 2 and 3 to get 6

    13 = 30 …… add 6 and 7 to get 13

    We get two different numbers on either side, so the last equation is not true. We get a contradiction or false statement. So the original equation is false when x = 3. Therefore, x = 3 is not the solution.

    That’s why the overall claim is false.

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