How To Change Subject Of A Formula

#Changing the #subject of a #formula

When changing the subject of a formula, we rearrange the formula so that we have a different subject.

To do this, remember:

Change side, change operation

In other words, if you move a term from one side of the equals sign to the other, change the operation to do the opposite. (The opposite of an operation is called its inverse).

For example, if the term you want to move is adding then when you move it to the other side it subtracts.
for y = 2+x
to make x the subject meaning to express x in term of y, you are going to isolate x in such a way it stands alone, and other terms remain at one side.
y=2+x subtract 2 from both sides
y-2= 2+x-2
y-2 = x
Hence x is written in terms of other terms.

In this video we will be looking on to more advanced problems.

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