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13 March, 04:58

The first numbers is 7 more than the second. Their sum is 29. Find the answers

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  1. 13 March, 05:13
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    If the first number is x and y is the second number

    x = 11

    y = 18

    Step-by-step explanation:

    If x is the first number and y is the second number then:

    x + 7 = y

    The sum of the two numbers is expressed as:

    x + y = 29

    In order to find what the two numbers are, use what you know. According to the first equation, y equals the first number (x) plus 7, so you can substitute that for the y in the second equation

    x + y = 29

    x + (x + 7) = 29

    2x + 7 = 29

    2x + 7 - 7 = 29 - 7

    2x/2 = 22/2

    That means x equals 11

    Now that x is known, you can find the value for y. The second number (y) is 7 more than than the first number (x) so that means x + 7 = y

    11 + 7 = y

    y = 18
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