Tuesday, July 22, 2014

Subtraction in Equations


Subtracting equations is just another way to say subtracting equations with variables in them.
Like for example if we have the equation "y-4=15" with the variable y which is a lower-case letter.
To solve this we have to add since it is the opposite of subtraction and we have to add the +4 like this:
  +4   +4
Now we are left with 15+4 since the 4's since -4+4 cut each other out like this:
 y-4=15  =   15
  +4   +4     + 4
 y      =        19

So now we have a statement that says 15+4=19 and that y=19 and to find out if this is true we have to put our answer into the previous equation like this:


So this statement is true.
Now try some of these and make sure to watch the video on YouTube.

Sheet 1 Subtracting Equations

1 comment:

  1. A strong personal statement can set you apart from other candidates. Here you are given step-by-step instructions to find the unique yourself and finish a winning personal statement for college admission. See more uc personal statement examples prompt 2