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kaiteDID Group Title

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.

  • 2 years ago
  • 2 years ago

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  1. tcarroll010 Group Title
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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.

    • 2 years ago
  2. kaiteDID Group Title
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    ???

    • 2 years ago
  3. tcarroll010 Group Title
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    Where are you stuck?

    • 2 years ago
  4. kaiteDID Group Title
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    i dont understand none of it :(

    • 2 years ago
  5. tcarroll010 Group Title
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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?

    • 2 years ago
  6. kaiteDID Group Title
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    yes

    • 2 years ago
  7. tcarroll010 Group Title
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    One number is x and the other is y, but you can express y in terms of x.

    • 2 years ago
  8. muhammad9t5 Group Title
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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

    • 2 years ago
  9. tcarroll010 Group Title
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    As I pointed out in the first post, the second number, y, is 3x - 800.

    • 2 years ago
  10. kaiteDID Group Title
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    okay

    • 2 years ago
  11. tcarroll010 Group Title
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    So, add x and 3x - 800 and set that = 1200.

    • 2 years ago
  12. kaiteDID Group Title
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    262

    • 2 years ago
  13. kaiteDID Group Title
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    938

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

    • 2 years ago
  15. tcarroll010 Group Title
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    Add 800 to each side.

    • 2 years ago
  16. kaiteDID Group Title
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    idk this is to confusing

    • 2 years ago
  17. tcarroll010 Group Title
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    Are you having trouble adding 800 to each side of the equation 4x - 800 = 1200?

    • 2 years ago
  18. kaiteDID Group Title
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    ik how to add just this problem is so confusing

    • 2 years ago
  19. kaiteDID Group Title
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    200??

    • 2 years ago
  20. tcarroll010 Group Title
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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.

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

    • 2 years ago
  22. tcarroll010 Group Title
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    Hint, they add to 1200. So, 500 + y = 1200.

    • 2 years ago
  23. kaiteDID Group Title
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    okay 700

    • 2 years ago
  24. tcarroll010 Group Title
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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.

    • 2 years ago
  25. kaiteDID Group Title
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    thank you

    • 2 years ago
  26. tcarroll010 Group Title
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    Before you go, one question.

    • 2 years ago
  27. kaiteDID Group Title
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    ya?

    • 2 years ago
  28. tcarroll010 Group Title
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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.

    • 2 years ago
  29. kaiteDID Group Title
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    yes i think i am getting a little bit better

    • 2 years ago
  30. tcarroll010 Group Title
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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.

    • 2 years ago
  31. kaiteDID Group Title
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    thanks and u too

    • 2 years ago
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