Ask Question
17 August, 20:02

One number is 9 more than twice another number. if the sum of the number is 129, find both numbers.

+3
Answers (1)
  1. 17 August, 22:31
    0
    Let's call the first number n, and the second number m.

    n = 2m + 9 (9 more than twice the second number)

    If the sum is 129, that means n + m = 129.

    Now we can substitute the first expression (n = 2m + 9) into the second expression (n + m = 129), replacing the n.

    (2m + 9) + m = 129

    3m + 9 = 129

    3m = 129 - 9

    3m = 120

    m = 120/3

    m = 40

    Now that we know m, we can find out n by replacing the m with 40 in the first expression (n = 2m + 9):

    n = 2 (40) + 9

    n = 80 + 9

    n = 89.

    Therefore, n = 89, and m = 40.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “One number is 9 more than twice another number. if the sum of the number is 129, find both numbers. ...” in 📘 Physics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers