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27 November, 22:14

Use the substitution method to solve each system of equations. Write the answer in ordered pairs.

x-y=1

5x+3y=45

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  1. 27 November, 22:22
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    x - y = 1

    5x + 3y = 45

    Solve the first equation for x: x = y + 1

    Substitute x in the second with y + 1

    5x + 3y = 45

    5 (y + 1) + 3y = 45

    5y + 5 + 3y = 45

    8y + 5 = 45

    8y = 40

    y = 5

    Substitute 5 for y in x = y + 1

    x = y + 1

    x = 5 + 1

    x = 6

    Answer: (6, 5)
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