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Calculator with Brackets and Negatives

Reviewed by Calculator Editorial Team

This calculator handles mathematical expressions with brackets and negative numbers. It follows standard order of operations (PEMDAS/BODMAS) to ensure accurate results. Whether you're solving algebra problems, physics equations, or financial calculations, this tool provides clear results and explanations.

How to Use This Calculator

Using this calculator is straightforward. Follow these steps:

  1. Enter your mathematical expression in the input field. Use brackets (parentheses) to group operations and include negative numbers with the minus sign.
  2. Click the "Calculate" button to process the expression.
  3. Review the result and explanation provided.
  4. Use the "Reset" button to clear the input and start over.

Tip

For complex expressions, ensure each opening bracket has a corresponding closing bracket. The calculator will highlight syntax errors if the expression is invalid.

Formula Explained

The calculator evaluates expressions following the standard order of operations:

  1. Parentheses/Brackets (innermost first)
  2. Exponents/Orders
  3. Multiplication and Division (left to right)
  4. Addition and Subtraction (left to right)

Example Calculation

For the expression: (5 + (-3)) * 4

  1. Evaluate inside brackets: 5 + (-3) = 2
  2. Multiply result by 4: 2 * 4 = 8

Worked Examples

Here are some examples of expressions and their results:

Expression Result Explanation
(10 - 5) * 3 15 Brackets first: 10 - 5 = 5, then 5 * 3 = 15
4 + (-2) * 6 12 Multiplication first: -2 * 6 = -12, then 4 + (-12) = -8
(-3 + 7) / 2 2 Brackets first: -3 + 7 = 4, then 4 / 2 = 2

Common Mistakes

Avoid these common errors when using the calculator:

  • Forgetting to close brackets - always ensure each opening bracket has a matching closing bracket.
  • Misplacing negative signs - use parentheses to clarify negative numbers in expressions.
  • Ignoring order of operations - the calculator follows PEMDAS/BODMAS strictly.

Important Note

The calculator does not support variables or functions. It only evaluates numerical expressions with brackets and negative numbers.

Frequently Asked Questions

Can I use decimal numbers in the calculator?

Yes, the calculator accepts decimal numbers in expressions. For example, you can enter (3.5 + 2.1) * 1.5.

What happens if I enter an invalid expression?

The calculator will display an error message if the expression is invalid, such as unmatched brackets or incorrect syntax.

Can I use exponents in the calculator?

Currently, the calculator does not support exponents. It only evaluates basic arithmetic with brackets and negative numbers.