getyoursmarts getyoursmarts

24-01-2017
Mathematics

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What is the solution to the proportion:
(3y-8)/12=y/5
I want to know how to solve this in the future on my own. So can you please show the steps?
Thx!

Relax

Respuesta :

texaschic101 texaschic101

24-01-2017

(3y - 8) y
---------- = ----------
12 5

cross multiply

5(3y - 8) = 12y.....distribute thru the parenthesis
15y - 40 = 12y ....subtract 15y from both sides
-40 = 12y - 15y....simplify
-40 = -3y ....divide both sides by -3
-40/-3 = y
13 1/3 (or 13.333) = y

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