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27 March, 12:53

One number is 8 more than another number, and their sum is 20. Find the numbers.

The numbers are

and

+3
Answers (2)
  1. 27 March, 16:23
    0
    First number=6

    Second number=14

    Step-by-step explanation:

    Let the first number be x

    So the second number is x+8

    So the sum of the two is

    X+x+8=20

    2x+8=20

    2x=20-8

    2x=12

    X=12/2

    =6

    The second number will x+8

    So 6+8=14

    First number=6

    Second number=14
  2. 27 March, 16:37
    0
    The numbers are 6 and 14

    Step-by-step explanation:

    Say the unknown numbers are x and y

    Say y = 8+x ... eqn 1

    and x + y = 20 ... eqn 2

    Then if you replace y by 8+x, eqn 1 becomes

    x + 8 + x = 20

    Collect the like terms

    x + x = 20 - 8

    2x = 12

    Divide both sides by 2

    x = 12/6

    x = 6

    Then to get y, substitute 6 for x in eqn 1, and we will have

    y = 8 + 6

    y = 14
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