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7 August, 13:06

Solve for x and y. 3x+8y=20. 5x+3y=23

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Answers (2)
  1. 7 August, 13:08
    0
    x=4 and y=1

    Step-by-step explanation:

    Equation 1) 3x+8y=20

    Equation 2) 5x+3y=23

    Equation 1) 5 (3x+8y=20)

    Equation 2) 3 (5x+3y=23)

    15x+40y=100

    15x+9y=69

    (Take away 40y from 9y and 100 from 69)

    31y = 31

    y=1

    Substitute y=1 into equation 1)

    3x+8=20

    (Take away 8 from both sides)

    3x=12

    (Divide by 3)

    x=4
  2. 7 August, 13:14
    0
    Equation 1:

    x = - 8/3y + 20/3

    y = - 3/8x + 5/2

    Equation 2:

    x = - 3/5y + 23/5

    y = - 5/3x + 23/3

    Step-by-step explanation:

    SEE BELOW FOR STEPS
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