Algebra 1

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Solve by substitution
2x+3y=40.50
3x+y=38.00

  • Algebra 1 -

    Use the process of elimation and elimate the x varible. This gives you the y variable. Then you substitue this answer for the x varible. If you need any help with the process of elimantion, I could asist you more.

  • Algebra 1 -

    However, using substitution,

    pick either equation and solve for a variable:

    3x+y = 38.0
    so,
    y = 38-3x

    Now substitute that value into the other equation:

    2x+3y=40.50
    2x + 3(38-3x) = 40.5
    2x + 114 - 9x = 40.5
    -7x = -73.5
    x = 10.5
    y = 38-3x = 6.5

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