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10 May, 21:41

Use the substitution method to solve the system of equations. Choose the correct ordered pair. 2y + 5x = 13 2y - 3x = 5

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  1. 10 May, 22:39
    0
    2y + 5x = 13

    2y - 3x = 5

    ---

    Solve for x in the first equation. Subtract 2y from both sides.

    5x = 13 - 2y

    Divide both sides by 5.

    x = 13/5 - 2/5y

    ---

    Plug x into the second equation.

    2y - 3 (13/5 - 2/5y) = 5

    Distribute 3 inside the parentheses.

    2y - 7.8 + 1.2y = 5

    Combine like terms.

    3.2y - 7.8 = 5

    Add 7.8 to both sides.

    3.2y = 12.8

    Divide both sides by 3.2.

    y = 4

    ---

    Plug 4 for y into the first equation.

    2 (4) + 5x = 13

    8 + 5x = 13

    Subtract 8 from both sides.

    5x = 5

    Divide both sides by 5.

    x = 1

    ---

    x = 1, y = 4
  2. 10 May, 23:32
    0
    Answer: x=1 y=4

    your welcome little bulbs
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