SOLUTION: Please help me solve and understand this problem. Divide and simplify. 3y-12 over 55 divided by y-4 over 77

Question 251203: Please help me solve and understand this problem.
Divide and simplify.
3y-12 over 55 divided by y-4 over 77
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Divide and simplify.
3y-12 over 55 divided by y-4 over 77
---------
[3(y-4)/55] / [(y-4)/77]
---
Invert the denominator and multiply:
[3(y-4)/55] * [77/(y-4)]
----
Factors common to numerator and denominator: (y-4) and 11
Cancel the common factors:
---
= [3/5]
= 21/5
or
= 4.2
or
= 4 1/5
=============
Cheers,
Stan H.
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