**The aim of this puzzle**: To add to and subtract from the variable `x`

**Walkthrough of the solution**: This puzzle demonstrates how the plus (`+`

) and minus (`-`

) operators can be used to update a variables value. In the initial code the number 0 is being added to `x`

, and then subtracted from `x`

. To solve this puzzle you’ll need to change 0 to be a number higher than that (i.e. 1, or 2, or 3, or 4, etc).

**Sample code solution**:

(Tap below to reveal)

```
var x = 5;
x = x + 5
print('x is ' + x);
x = x - 3
print('x is now ' + x);
```

**JavaScript Concepts**: Binary Expression (=, +, -), Calling Functions, Identifiers, Variable Declaration

**Grasshopper Concepts**: print()