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25 November, 19:18

Solve y=3x-7 and 4x+3y=18 by substitution

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  1. 25 November, 19:21
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    x = 3 and y = 2

    Step-by-step explanation:

    y = 3x - 7

    substituting for y in 4x + 3y = 18, we will have

    4x + 3 (3x - 7) = 18

    4x + 9x - 21 = 18

    13x = 18 + 21

    13x = 39

    x = 3

    Substituting for x in y = 3x - 7, we have

    y = 3 (3) - 7

    y = 9 - 7

    y = 2
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