Math- urgent

One more than 3 times a number is the same as 5 times the number, decreased by 15. Find the number.
• Assign the variable
• Write an equation
• Solve equation

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  1. x = variable

    3x + 1 = 5x - 15

    16 = 2x

    ? = x

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    Ms. Sue
  2. 1 + 3x = 5x - 15

    1 + 3x-3x = 5x-3x - 15

    1 = 2x - 15

    1+15 = 2x - 15+15

    16 = 2x

    16/2 = 2x/2

    8 = x or x = 8

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  3. 3p+1 = 5p-15

    3P+ 1+15 = 5P -15 +15
    3p +16 = 5p
    3p-3p+16 = 5p -3p

    16 = 2p

    p = 8

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