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kaiteDID

Use the three steps to solve the problem. One number is 800 less than 3 times the other, and their sum is 1,200. Find the numbers.

  • one year ago
  • one year ago

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  1. tcarroll010
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    One number is x. The other number is expressed in terms of this number, in terms of x. So, the other number is 3x - 800. Add both together and set to 1200. Solve for x.

    • one year ago
  2. kaiteDID
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    ???

    • one year ago
  3. tcarroll010
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    Where are you stuck?

    • one year ago
  4. kaiteDID
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    i dont understand none of it :(

    • one year ago
  5. tcarroll010
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    Ok, from the very start. You are being asked to add two numbers and get 1200. So, an initial equation could be x + y = 1200. This follows follows from "...and their sum is...". Do you follow?

    • one year ago
  6. kaiteDID
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    yes

    • one year ago
  7. tcarroll010
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    One number is x and the other is y, but you can express y in terms of x.

    • one year ago
  8. muhammad9t5
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    let x be the number then less than means subtract i think 800-3x=0......1 800+3x=1200...........2 solve further

    • one year ago
  9. tcarroll010
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    As I pointed out in the first post, the second number, y, is 3x - 800.

    • one year ago
  10. kaiteDID
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    okay

    • one year ago
  11. tcarroll010
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    So, add x and 3x - 800 and set that = 1200.

    • one year ago
  12. kaiteDID
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    262

    • one year ago
  13. kaiteDID
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    938

    • one year ago
  14. tcarroll010
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    Well, you have x + (3x - 800) = 1200 -> (x + 3x) - 800 = 1200 -> 4x - 800 = 1200. Can you find x from here?

    • one year ago
  15. tcarroll010
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    Add 800 to each side.

    • one year ago
  16. kaiteDID
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    idk this is to confusing

    • one year ago
  17. tcarroll010
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    Are you having trouble adding 800 to each side of the equation 4x - 800 = 1200?

    • one year ago
  18. kaiteDID
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    ik how to add just this problem is so confusing

    • one year ago
  19. kaiteDID
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    200??

    • one year ago
  20. tcarroll010
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    Any problem can be hard if there are a lot of steps and you desire to go from step 1 right to step 10 or step 15. Problems definitely do get easier when you go only to the next step. You will eventually get there, but it isn't always quick. In the beginning, you have to do all the steps, but then it gets easier because you can then either skip a couple steps or just do them faster with practice.

    • one year ago
  21. tcarroll010
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    4x - 800 = 1200 -> 4x = 2000 -> x = 500. So 500 is one of your numbers. Can you get the other number?

    • one year ago
  22. tcarroll010
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    Hint, they add to 1200. So, 500 + y = 1200.

    • one year ago
  23. kaiteDID
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    okay 700

    • one year ago
  24. tcarroll010
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    Yes, you got it! It is helpful to go back to the original problem and then you will be able to see how those numbers satisfy both conditions.

    • one year ago
  25. kaiteDID
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    thank you

    • one year ago
  26. tcarroll010
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    Before you go, one question.

    • one year ago
  27. kaiteDID
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    ya?

    • one year ago
  28. tcarroll010
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    Do you find that you are getting this even a little better now? The whole goal is for students to learn a little bit and feel more comfortable with math. Too often some go throughout life with an uneasiness about math, and they wish they didn't.

    • one year ago
  29. kaiteDID
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    yes i think i am getting a little bit better

    • one year ago
  30. tcarroll010
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    The solving of problems does help in many ways, one of which is general problem-solving, even outside of math, acquiring a certain amount of discipline and just feeling good. You're a nice person and I hope you do well in life.

    • one year ago
  31. kaiteDID
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    thanks and u too

    • one year ago
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