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    what is 7-5x=28+2x?

    0  Views: 283 Answers: 2 Posted: 8 years ago

    2 Answers

    7 - 5x  =  28 + 2x
    7 -5x + 5x = 28 + 2x + 5x (Trying to get unknown on one side of equation. Start by adding 5x tto both sides will zero out -5x)
    7 = 28 + 7x   (Now get the x all by itself....Subtract 28 from both sides)
    7 - 28 = 28 + 7x - 28
    -21 = 7x   Get the X alone; divide both sides by  7. 
    -21/7 = 7x/7
    -3 = x 

    valR

    good answer!
    Bob/PKB

    Thanks valR! :D

    7 - 5x = 28 + 2x


       7 - 5x = 28 +2x


      -7  -2x    -7  - 2x


    ------------------------------------


            -7x   =   21


           -----      -----


             -7           -7


    x = -3

    valR

    good answer


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