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Patricia is thinking of a number. If you triple it and subtract 11 you obtain 28. What is Patricia's number?

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Shinalcantaraviz
let 'x' be the number 
3x - 11 = 28
3x = 28 + 11
3x = 39
x = 13
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