Jawapan

2015-05-26T20:43:10+08:00
5x + 3x + 40 = 0 8x = -40 x = -40/8 x = -5
1 3 1
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2015-05-31T14:32:22+08:00
5x + 3x + 40 = 0
         8x +40 = 0
                8x = -40
                  x = -40  
                        
   8
                  x = -5
2 5 2