Carolina12321
Carolina12321 Carolina12321
  • 01-02-2017
  • Mathematics
contestada

I don't understand, please help :
Algebra... :
Ninety-nine less than three times Brandons age is thirty-one less than his age. How old is Brandon?
(please show work!)

Respuesta :

BookWorm01
BookWorm01 BookWorm01
  • 01-02-2017
3x-99=x-31 is the equation (x being his age)
           -x
2x-99=-31
   +99
2x=68
x=34
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