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March 28, 2017

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solve the following absolute value question
/4x + 5/ =25

  • math - ,

    assume 4x+5 is positive, then 4x>-5 or x>-1.2 AND
    4x+5=25 or 4x=20 or x=5, which meets both of the requirement above.

    assume 4x+5 is negative, then 4x<5, or x<1.25, AND 4x+5=-25 or 4x=-30, and x=-7.5 which meets the requirement

    x= -7.5 or x=5

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