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#51 Help Me ! » algebra reducing fractions to lowest terms » 2013-07-08 10:40:49

bronxsystem
Replies: 4

Hey all im stuck on this problem and looks like i will need to redo the chapter because im missing something.

Any chance someone can just aware me how to solve this?

Reduce the following fractions to lowest terms

(y^2 + 2y - 15) / ( 2y^2 - 12y + 18)

been up a while my brain all mushy but i know im meant to factor both the numerator and denominator into their prime factors.

i think the denominator would be (2y - 6) (y - 3) is that right?
the numerator im stuck and not sure what to do next

any help appreciated ^^

#52 Re: Dark Discussions at Cafe Infinity » what is more optimal. specific book or general K12 books » 2013-06-30 16:26:13

awesome thanks

i bought a great algebra book in case anyone comes across thread in future its called "practical algebra a self teaching guide" by peter selby and steve slavin.

very well laid out.

#53 Dark Discussions at Cafe Infinity » what is more optimal. specific book or general K12 books » 2013-06-30 08:00:21

bronxsystem
Replies: 3

Hey all, sorry if i posted this in the wrong section, just looking for some insight.

my math level is about K-8 (year 8 high school) basics

i just finished a year 8 high school math book and curious what you guys think is the best way to reach college entry level math (aware long way to go).

I can continue working through high school math books until i finish K-12 level. Alternatively i can buy books on specific subjects for instance geometry or algebra.
There are so many books out there and i don't want to take the sub optimal route.

-cliffs

what is most efficient way to obtain college entry assumed math knowledge?
aware there are no shortcuts, i just wasnt sure if i should continue buying highschool books.
any advice much appreciated

#55 Introductions » Hello ^^ » 2013-06-26 20:02:43

bronxsystem
Replies: 8

Hey all just found this site and think its awesome. My current math ability is embarrassing but for some reason find math fascinating i want to learn more about it.
Curious though was everyone here a young math prodigy as a child or did some members get involved in math at a later age like me (im 26).

#57 Re: Help Me ! » basic Algebra question » 2013-06-23 01:33:03

oops yeah i see what happened

161 - 7b - 5b = 5
-7 - 5b = -156
-12b = -156
b = 13


thanks for link and help all (:

#58 Re: Help Me ! » basic Algebra question » 2013-06-22 22:37:51

is this the proper working?
a+b = 23
a = 23 - b
7a - 5b = 5

7 (23 - b) - 5b = 5
151 - 7b - 5b = 5
-7b - 5b = 156
12b = 156
b = 13

and second number easy but does that working make sense?

#59 Re: Help Me ! » basic Algebra question » 2013-06-22 22:03:37

hey thanks

any chance you can break down how you solve 7a - 5b = 5 ><
my book doesn't explain it

not being lazy i was able to do the earlier ones but just hit a wall here plzzzzzzzzzz tips and tricks

#60 Help Me ! » basic Algebra question » 2013-06-22 21:40:56

bronxsystem
Replies: 8

basic algebra but im having trouble with it
any advice much appreciated

The sum of two numbers is 23. Seven times the first number less five times the second number is equal to 5. What are the two numbers?

not sure where to start ><

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