SOLUTION: THIS PROBLEM IS FROM CHAPTER 6 CHAPTER TEST PROBLEM 20 7/Y-1/3=1/4 MY TEACHER DID NOT EXPLAIN THE STEPS IN SOLVING THIS PROBLEM.

Algebra ->  Expressions-with-variables -> SOLUTION: THIS PROBLEM IS FROM CHAPTER 6 CHAPTER TEST PROBLEM 20 7/Y-1/3=1/4 MY TEACHER DID NOT EXPLAIN THE STEPS IN SOLVING THIS PROBLEM.      Log On


   

Question 193052This question is from textbook ELEMENTARY ALGEBRA
: THIS PROBLEM IS FROM CHAPTER 6 CHAPTER TEST PROBLEM 20
7/Y-1/3=1/4
MY TEACHER DID NOT EXPLAIN THE STEPS IN SOLVING THIS PROBLEM. This question is from textbook ELEMENTARY ALGEBRA

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
Assume the problem is:
7%2FY - 1%2F3 = 1%2F4
If we multiply the equation by 12y, we can get rid of the denominators
12y*7%2FY - 12y*1%2F3 = 12y*1%2F4
Cancel out the denominators and you have
12(7) - 4y = 3y
:
84 = 3y + 4y
:
84 = 7y
y = 84%2F7
y = 12
:
:
Check solution in original problem
7%2F12 - 1%2F3 = 1%2F4
7%2F12 - 4%2F12 = 3%2F12