*info_outline*

Solutions will be available when this assignment is resolved, or after a few failing attempts.

# Calculator with static methods

Build a calculator using only static and class methods.

This is the way it should work:

```
Calculator.add(2, 4) # 6
Calculator.subtract(8, 1) # 7
Calculator.multiply(3, 5) # 15
Calculator.divide(5, 2) # 2.5
```

Note that I've never created an instance of the calculator. I'm using the regular class.

One final addition. The `subtract`

method **must** be implemented using the `add`

method. Something like this:

```
subtract = add(x, y * -1)
```