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

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    0  Views: 378 Answers: 2 Posted: 14 years ago
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      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 

      14 years ago. Rating: 2
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        valR

        good answer!
        commented 14 years ago
        Bob/PKB

        Thanks valR! :D
        commented 14 years ago

        7 - 5x = 28 + 2x


           7 - 5x = 28 +2x


          -7  -2x    -7  - 2x


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


                -7x   =   21


               -----      -----


                 -7           -7


        x = -3

        14 years ago. Rating: 0
        Comment this answer

          valR

          good answer
          commented 14 years ago


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