Jawabanmu

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2014-03-11T17:40:09+07:00
2x+7 = 5x-11
2x - 5x = - 11 - 7
-3x = -18
  x = 6
jadi, x + 3 = 6 + 3 = 9
1 5 1
2014-03-11T17:40:53+07:00
2x + 7 = 5x - 11
7 + 11 = 5x - 2x
18 = 3x
x = 18 : 3= 6
6+3=9