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25 January, 10:29

Solve the system of equations and choose the correct ordered pair 4x - 2y + 7 = 33 and 5y=3x-30

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  1. 25 January, 10:52
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    1. Solve for x in 4x-2y+7=33

    4x-2y+7=33

    4x+6=33+2y

    4x=33+2y-7

    4x=2y+26

    x = (2y+26) / 4

    x = (2 (y+13)) / 4

    x = (y+13) / 2

    2. Substitute x = (y+13) / 2 into 5y=3x-30

    5y=3x-30

    5y=3 * (y+13) / 2 - 30

    5y = (3 (y+13)) / 2 - 30

    3. Solve for y in 5y = (3 (y+13) / 2 - 30

    5y = (3 (y+13)) / 2 - 30

    10y=3 (y+13) - 60

    10y=3y+39-60

    10y=3y-21

    10y-3y=-21

    7y=-21

    y=-21/7

    y=-3

    4. Substitute y=-3 into x = (y+13) / 2

    x = (y+13) / 2

    x = (-3+13) / 2

    x=5

    5. Therefore,

    x=5 and y=-3

    I hope you have a nice day : D
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