Liyuki
contestada

Helppp please.
Megan is 5 years older than Sandy. If four years ago Megan was three years less than three times Sandy's age, how old is Sandy now?

Respuesta :

sunsetshimmer14
the solution
m = s + 5 
m - 4 = (3s) - 3 
(s + 5) - 4 = 3s - 3 
s + 1 = 3s - 3 
s = 3s - 4 
-2s = -4 
s = 2 
m = 7 
Check this: 

m - 4 = 3s - 3 
7 - 4 = 3(2) - 3 
3 = 6 - 3 
3 = 3 

So Sandy is 2 and Megan is 7.

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