March 25, 2017

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Use substitution to solve the system of equations given below.
8x - 4y = 16
2x - y = 4

  • Math - ,

    2x - y = 4

    Subtract 4 and add y to both sides of the above equation.

    y = 2x -4

    8x - 4y = 16

    Substitute 2x-4 for y in last equation and solve for x. Insert that value into the first equation and solve for y. Check by inserting both values into the second equation.

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