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moazzam07

  • one year ago

The sum of two numbers is 77. The greater number is 5 more than the smaller number. Which equation can be used to solve for the smaller number? x(x − 5) = 77 x(x + 5) = 77 x − (x + 5) = 77 x + (x + 5) = 77

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  1. moazzam07
    • one year ago
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    @LynFran

  2. mathstudent55
    • one year ago
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    Let's call the smaller number x. If the larger number is 5 more than the smaller number, then what is an expression for the larger number using x?

  3. moazzam07
    • one year ago
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    x+5

  4. mathstudent55
    • one year ago
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    Correct. Now we know the two numbers are x and x + 5. We are told the sum of the numbers is 77. How do you express the sum of x and x + 5?

  5. moazzam07
    • one year ago
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    i dont know

  6. LynFran
    • one year ago
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    hint... sum means to add

  7. moazzam07
    • one year ago
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    i know

  8. mathstudent55
    • one year ago
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    A sum means to add together. You need the sum of the number x and the number x + 5.

  9. mathstudent55
    • one year ago
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    The sum of 2 and 3 is 2 + 3 The sum of a and b is a + b The sum of x and x + 5 is ...

  10. moazzam07
    • one year ago
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    x + (x+5)

  11. mathstudent55
    • one year ago
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    Exactly. Just one step left to do. We are told the sum is 77. That means that sum you just wrote equals 77. Can you write that now?

  12. moazzam07
    • one year ago
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    yes x + (x +5) = 77

  13. mathstudent55
    • one year ago
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    Exactly. Good job!

  14. moazzam07
    • one year ago
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    @mathstudent55 i have one more problem can you help mez/

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