Question 212435
s = Samantha's present age
:
If Samantha were three times as old as she was five years ago,
expression for this: 3(s-5)
:
 she will be sixty less than six times her current age. 
expression for this: 6s - 60
:
How old is Samantha?
:
3(s-5) = 6s - 60
:
3s - 15 = 6s - 60
:
-15 + 60 = 6s - 3s
:
45 = 3s
s = {{{45/3}}}
s = 15 yrs is Samantha's present age
:
Lets see if that's true
3(15-5) = 6(15) - 60
3 * 10 =  90 - 60
:
:
Not that hard, right?  Did you understand what we did here?