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2 July, 04:29

Use the substitution method to solve the system of equations. {y=3x-715x-5y=14 What is the solution? The solution is (15, 5). The solution is (0, 7). There is no solution. There are an infinite number of solutions.

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  1. 2 July, 06:18
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    Y = 3x - 7 ... so we sub in 3x - 7 for x in the other equation

    15x - 5y = 14

    15x - 5 (3x - 7) = 14

    15x - 15x + 35 = 14

    15x - 15x = 14 - 35

    0 = - 21 ... incorrect ... therefore, this has no solution
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