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4 September, 22:14

The sum of 2 times a number and 11 is - 7

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  1. 5 September, 02:09
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    Let the x represent the unknown number.

    "2 times a number" is 2x

    "The sum of 2 times a number and 11" is 2x + 11

    "The sum of 2 times a number and 11 is - 7" is 2x + 11 = - 7

    Now we solve the equation for x to find the unknown number.

    2x + 11 = - 7

    Subtract 11 from both sides.

    2x = - 18

    Divide both sides by 2.

    x = - 9

    Answer: The number is - 9.

    Check: 2 times - 9 = - 18

    -18 + 11 = - 7

    The answer is correct.
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