Is x= 6 a solution to the equation –18 = -2(x + 3)?

Question

Is x= 6 a solution to the equation –18 = -2(x + 3)?

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Nick 2 months 2021-07-30T15:39:33+00:00 2 Answers 5 views 0

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    0
    2021-07-30T15:40:47+00:00

    Answer:

    yes, x=6 is a solution

    Step-by-step explanation:

    -18 = -2(6+3)

    -18 = -2(9)

    -18= -18

    0
    2021-07-30T15:41:00+00:00

    Answer:

    Yes, it is

    Step-by-step explanation:

    If you substitute the value of x into the equation, we would get:

    -18=-2(6+3)

    By using BIDMAS (or whatever else people use, BODMAS, PEDMAS), we first have to do the brackets. In the brackets we have 6+3 (which equals 9).

    Now our equation can be simplified to -18=-2(9).

    Now  we simply multiply -2 with 9, as a number next to something in a bracket usually means multiplication. If you multiply a positive by a negative, the product will be negative. Therefore, -9 x 2 = -18.

    This proves it is a correct solution.

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )