Same way you add equalities. Just find the least common denomenator, and add.
Repetition.
List them.
The easiest way is to multiply the numbers together. The answer won't necessarily be the least common multiple, but it will be a common multiple. The easiest way to get a common multiple is to multiply the numbers together. The result will not necessarily be the least common multiple, but it will be a common multiple.
same way you do equalities, just remember to change the greater or lesser than sign around if you multiply or divide by a negative number.
There is no easy way or really, any way at all to memorize an infinite list.
The easiest way to remember it, is by remembering .50=1/2 inch
Just read and remember the methods over and over again it works for me !
Be yourself. This is the easiest way to be cool. Remember that it doesn't matter what other people think.
It is the easiest way to remember how to type letters and where they are on the keyboard. Also, you can spell typewriter on the top row.
The easiest way to remember things is to write it down a couple times. You can also review/read the thing you are trying to remember a couple of time first thing in the morning.
The easiest way to remember conjugations in French is to say them out loud when you are in the shower, washing dishes, or going about your daily activities. Writing them down helps to remember them, also.