Answers

2014-11-05T22:24:43+08:00
Let 'x' be the number 
3x - 11 = 28
3x = 28 + 11
3x = 39
x = 13
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2014-11-05T23:28:29+08:00
Let  x be the number.triple the no.=3x substract11 from it =28 ie3x-11=28      or 3x=28+11=39 3x=39 or x=39/3 =13  then 13 is the number
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