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29 September, 15:51

These equations take their y-values from the set {4, 5, 6, 7, 8}. Arrange the equations in decreasing order of the values of y that make them true.

(2y + 3) - 4 = 9

4y - y + 1 = 13

4y + (y - 1) = 29

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  1. 29 September, 16:10
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    4y + (y - 1) = 29

    (2y + 3) - 4 = 9

    4y - y + 1 = 13

    Step-by-step explanation:

    We will have to check each equation for the given values of y.

    So,

    1. (2y + 3) - 4 = 9

    For y=4

    [2 (4) + 3]-4=9

    (8+3) - 4=9

    11-4=9

    7=9

    Not true for 4

    For y=5

    [2 (5) + 3]-4=9

    (10+3) - 4=9

    13-4=9

    9=9

    True for 5

    2. 4y - y + 1 = 13

    For y=4

    4 (4) - 4+1=13

    16-4+1=13

    13=13

    True for 4

    3. 4y + (y - 1) = 29

    As we have already used 4 and 5 we will check for 6 and onwards

    For y=6

    6 (4) + (6-1) = 29

    24+5=29

    29=29

    So the equations in decresing order of y that make them true are:

    4y + (y - 1) = 29

    (2y + 3) - 4 = 9

    4y - y + 1 = 13 ...
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