OpalLeFay
OpalLeFay OpalLeFay
  • 12-04-2018
  • Mathematics
contestada

3x + 1 = x + 19

x = ?

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mjalimaris1227 mjalimaris1227
  • 12-04-2018
3x+1=x+19
     -1      -1
3x=x+18
-x  -x
2x=18
/2   /2
x=9
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