SOLUTION: I don't need answers I just need you to explain how to do the problem 1) 4/8 + 2y/8xy 2) a�+a-72/8a * 1/a-8 3) 9a/16a^3-64a� / 9a/6a-24

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Question 384891: I don't need answers I just need you to explain how to do the problem

1) 4/8 + 2y/8xy
2) a�+a-72/8a * 1/a-8
3) 9a/16a^3-64a� / 9a/6a-24

Found 2 solutions by Alan3354, stanbon:
Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website!
You didn't say what you want to do.

Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website!
I don't need answers I just need you to explain how to do the problem
1) 4/8 + 2y/8xy
Reduce:
1/2 + 1/4x
---
Least common denominator: 4x
Rewrite each term with the lcd as its denominator:
---
2x/4x + 1/4x
---
Combine:
(2x+1)/4x
============================

2) a^2+a-72/8a * 1/a-8
Factor:
[(a+9)(a-8)/8a]
Cancel:
(a+9)/(8a)
==================

3) [9a/16a^3-64a^2] / [9a/6a-24]
---
Factor:
[9a/(16a^2(a-4))]/[9a/(6(a-4)]
--------
Invert and multiply:
[9a/(16a^2(a-4))]
----
Cancel:
[9a/(16a^2(a-4))]
----
[1/8a^2]
---
= 3/(8a^2)
======================
Cheers,
Stan H.
============