How to solve equations that use formulas
The following steps will show you how to substitute formulas into an equation and solve to find the desired answer in Prelim Standard Math.
- Write the formula
- Replace the variables in the formula with the numbers given in the question
- If the unknown is not the subject of the equation, solve the equation to make the unknown the subject
- Evaluate using a calculator
How to use a formula to convert between Fahrenheit and Celsius
The video below explains how to convert between Fahrenheit and celsius using a formula.
How to calculate the height of a trapezium when given the area
The following video explains how to rearrange a formula to find the height of a trapezium.