# Rearranging Formulas

# Rearranging Formulas

**Understanding Formulas**

- A formula is a mathematical rule written in symbols.
- Formulas are usually written as an equation with one variable to represent an unknown value.

**Changing the Subject of the Formula**

- The subject of a formula is the variable you are solving for.
- To change the subject, you must make the new subject stand alone on one side of the equal sign.

## Steps to Rearranging Formulas

**Step 1: Identify the New Subject**

- The first step in rearranging a formula is to identify what the new subject of the formula should be.

**Step 2: Isolate the New Subject**

- This step might include adding or subtracting values from both sides of the equation to isolate the new subject.

**Step 3: Simplify**

- After isolating the new subject, simplify the equation if necessary.

**Dealing with Squares and Square Roots**

- When dealing with squares or square roots, refer to the inverse operations in order to isolate the new subject.
- Keep in mind that
**the square root is the inverse operation of squaring**, and vice versa.

**Handling Fractions**

- When rearranging a formula that contains a fraction, it may be helpful to multiply both sides of the equation by the denominator to eliminate the fraction.

**Using Inverse Operations**

- When rearranging a formula, use the
**inverse (opposite)**operations to get the variable alone. For example, if the original operation is multiplication, use division to isolate the variable.

**Dealing with Brackets**

- It is essential to understand how to
**Expand Brackets**. This could be helpful when the variable is within a bracket. - Remember the BODMAS rule (Brackets, Orders, Division and Multiplication, Addition and Subtraction)

Understanding these concept would help make formula rearranging simpler and easier.