- Education and Science»
Simple Algebraic Equations / How to Solve and Deal with Some Problems
When X replaced the unknown variable...
Let's say we need to solve an equation with one variable, teachers usually call it "X", remember in the movies, how people who didn't know how to sign his/her John Hancock, they just crossed out and sign with at least three X's? Well here is how I came out myself with that short story...let's immerse ourselves in a small example. (Poor Alfred in this pic to my right...>>>)
Let's start with our first equation:
Rule number one: the sign ' = ' is there like a Bouncer who will watch who is who and where they are
So far 2x is a positive dude, PLUS NUMBER 3. On the other room is number 13. Now the Bouncer or gate keeper, will punish any of them if they pass to the other room. The punishment will result in changing its positive value to negative, if they move from room to room.
In the same manner whoever already has a negative sign..like a '-6' will change to '+6' if this boy/number switch rooms...you guys follow me? Shh!, waiting for the less smart to catch up with us...easy please! Silence!!! Hey Anthony, stop throwing pieces of your eraser to Sarah!!
We isolate as much as possible our X to the left side. You ask why? common sense, and nature...just follow me. Stop interrupting me Peter!
2x=13-3 (number 3 got punished for going to the left room, so it's changed to -3)
Second rule, whatever number is holding the X against his will, in this case 2x, will be punished worst than before, will go to the next room but, this time will be crushed by the number to the right side..in this case number 10. Which in other words, your teacher will tell you that any multiplying number will become a divisor when is transferred to the other side of the '=' sign.
so we divide 10 over 2 and the answer is? ..Hey Amanda? stop sucking that thumb!
"Sorry, Mr Cross, I think is five?"
Are you asking me? or answering Amanda?
" Well, I just...I don't know much math, I moved from Eastern Europe, and my English is still kinda average?"
NOW THE LAST THING BOYS!
Don't forget to double check your answer, inserting x=5 in the original equation
So this Bouncer was right! 13=13...! He was hired to keep both places as equal.
See you next time class!
As soon as Lord finishes, a little fly lands on his cheek...Amanda comes over and slaps on his face..." smack!"
SOLVE THIS ONE ALFRED!
The answer is?, x=?
5x=40 x=40/5 X=8
- My Math and Science Class
Yeah, my name is Fred and not Greg. You must've heard about me before in here. Thanks to our friend Lord, we are going to share some anecdotal situations, that made my science and math class really, really fun.