March 2011
Intermediate to advanced
829 pages
25h 44m
English
Content preview from Technical Mathematics, Sixth Edition
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
11.7. Adding and Subtracting Fractions
From multiplying and dividing fractions, we now move on the operations of addition and subtraction.
11.7.1. Similar Fractions
Similar fractions (also called like fractions) are those having the same (common) denominator.
NOTE
To add or subtract similar fractions, combine the numerators and place them over their common denominator.
Example 49:These examples show the addition and subtraction of common and algebraic fractions having the same denominators.
|
11.7.2. Least Common Denominator
The least common denominator, or LCD (also called the lowest common denominator), is the smallest expression that is exactly divisible by each of the denominators. Thus the LCD must contain all the prime factors of each of the denominators. The common denominator of two or more fractions is simply the product of the denominators of those fractions. To find the least common denominator, drop any prime factor from one denominator that also appears in another denominator.
Example 50:Find the LCD for the two fractions Solution: Factoring each denominator, ... |
and 
.Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.