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March 26, 2017

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I have worked this problem out and just need confirmation. 15 + 2x - 5 = 130;
2x + 10 - 10 = 130 -10;

2x/2x = 120/2x;

x = 60.

  • ALGEBRA - ,

    SO SORRY. PLEASE DISREGARD THE FIRST PROBLEM. I DID NOT POST THE ORIGINAL MATH PROBLEM. THIS IS THE ORIGINAL MATH PROBLEM 5 (3+4X) -5 = 130; 15+20x -5 =130;
    20x +10 = 130;
    20x +10-10 = 130 -10
    20x/20x = 120/20x
    x = 6
    Thank you

  • ALGEBRA - ,

    6 is correct. However, your last step is not quite correct.
    starting with...
    20x + 10 - 10 = 130 - 10
    20x = 120
    Now divide both sides by 20, not 20x
    20x/20 = 120/20
    x = 6

  • ALGEBRA - ,

    Thank you! I had thought something was wrong with the last step but could not figure it out. You were a great help!

  • ALGEBRA - ,

    You're welcome.
    Glad to help

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