> ## Documentation Index
> Fetch the complete documentation index at: https://docs.abscissa.eu/llms.txt
> Use this file to discover all available pages before exploring further.

# Addition and subtraction

> Learn how to add and subtract.

## Usage

Addition and subtraction are the simplest operators. They act just as you'd use them writing math on paper:

```ms3 theme={"dark"}
# Addition
1 + 1

# Subtraction
4 - 2
10 - 20

# Bare
7
2

# Bare signed
+14 
-29

# imagine bare signed as having a zero before the sign that's invisible
0 + 14
0 - 29
# the runtime processes it this way internally
```

## Exceptions

As we'll see later, the summation and subtraction operation will behave different according to the types of the elements on both sides (e.g. it's not the same the addition of two numbers than the addition of two vectors).