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March 25, 2017

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BC=3x+2 and CD= 5x-10. Solve for x.

  • 10th grade - ,

    Does BC=CD? If so,
    3x+2=5x-10
    12=2x
    12/2=x

  • 10th grade - ,

    if BC=DC then you would do

    3x+2=5x-10

    then you do algebra by adding 10 to both sides like this
    3x+2=5x-10
    +10 +10 the 10s cancel out
    ------------
    3x+2=5x

    then you subtract 3x from both sides like soo

    3x+12=5x
    -3x -3x 3Xs cancel out
    -----------
    12=2x then you divide 2 from both sides
    /2 /2

    answer: 6=X

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