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11 December, 05:17

the sum of 3 numbers is 9. tge second number is 3 less than the first. the thirf number is four morethan twice the first. find each number

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  1. 11 December, 05:20
    0
    The value of the first number, x, is eual to 2. The value of the second number, y, is equal to - 1. The value of the third number, z, is equal to 8.

    x + y + z = 9

    y = x - 3

    z = 2x + 4

    Because we have values for y and z, we can find the exact value of x, which we can use to find the exact values for the other variables.

    x + x - 3 + 2x + 4 = 9

    Combine like terms.

    4x + 1 = 9

    Subtract 1 from both sides.

    4x = 8

    Divide both sides by 4.

    x = 2

    Now that we have a value for x, we can plug this value in to each other x value to solve for y and z.

    y = 2 - 3

    y = - 1

    z = 2 (2) + 4

    z = 8
  2. 11 December, 05:39
    0
    Answer is 8 sorry if I'm incorrect
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