We can express an equation in terms of the other variable.
To rearrange the equation so that it is written as take each term and move to the other side of the equal sign using the opposite operation until you only have remaining on the left.
e.g. Rearrange to make the subject of the equation
Take to the other side of the equal sign by adding to both sides
Take to the other side of the equal sign by subtracting from both sides
Divide both sides by
Now if we have a value for we can find
e.g. Find when
- RMIT University online videos review solving simple equations using the ideas of balance and opposite operations.