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March 25, 2017

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solve the system by substitution..
-3x-5y=-17
4x=y-8

  • Fundamentals of math - ,

    -3x - 5y = -17

    4x+8 = y I solve this for y

    Now rewrite the first equation and put in 4x + 8 for y.

    -3x -5(4x+8) = -17

    solve for x. Be sure to multiply both 4x and 8 by negative 5.

    Once you have x, you can find y in the original equation.

    Also, always check your x and y in both equations to be sure you have not made a mistake.

  • Fundamentals of math - ,

    Thank you so much

  • Fundamentals of math - ,

    You are welcome

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