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5 July, 02:51

3x-2y=12 and 2x+4y=16 Solve with Subsitution

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  1. 5 July, 03:04
    0
    Sub

    solve for 1 variable

    solve for x in seond eqution

    divide everybody by 2

    x+2y=8

    minus 2y

    x=8-2y

    sub 8-2y for x in other equation

    3 (8-2y) - 2y=12

    24-6y-2y=12

    24-8y=12

    minus 24

    -8y=-12

    divide - 8 both sides

    y=3/2

    sub

    x=8-2y

    x=8-2 (3/2)

    x=8-3

    x=5

    (5,3/2)
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