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22 July, 15:44

Solve by substitution method 5x+y=18 and y=4x

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  1. 22 July, 15:55
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    5x + y = 18

    Given y = 4x; substituting y into the first equation:

    5x + (4x) = 18

    Combine x terms:

    9x = 18

    Divide by 9 on both sides:

    x = 2.
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