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

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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