# Lesson 3.3: Parentheses

## Symbols

$\text{( opening parenthesis}$

⠷

$\text{) closing parenthesis}$

⠾

## Explanation

Parentheses are used to determine different groups of objects. Sometimes what is inside the parentheses is what should be taken care of first in the problem. Parentheses are usually used in pairs as an opening parenthesis and a closing parenthesis. These are two different symbols. The opening parenthesis is created using dots one-two-three-five-six and the closing parenthesis is made using dots two-three-four-five-six. Do not put a space between the mathematical parentheses and the symbols associated with them. The numeric indicator is not needed for the numeral following the opening parenthesis, even if the enclosed value is the first on a line or after a space. This is because the Nemeth Code parenthesis is a full braille cell in height, and because there is no space between the opening parenthesis and the numeral.

### Example 1

$\left(7\times 5\right)$

⠷⠶⠈⠡⠢⠾

### Example 2

$\left(8\times 3\right)=24$

⠷⠦⠈⠡⠒⠾⠀⠨⠅⠀⠼⠆⠲

### Example 3

$\left(2+3\right)+7$

⠷⠆⠬⠒⠾⠬⠶

### Example 4

$7-\left(4-3\right)$

⠼⠶⠤⠷⠲⠤⠒⠾