diff --git a/1-js/02-first-steps/08-operators/4-fix-prompt/solution.md b/1-js/02-first-steps/08-operators/4-fix-prompt/solution.md
@@ -1,32 +1,31 @@
-The reason is that prompt returns user input as a string.
-
-So variables have values `"1"` and `"2"` respectively.

```js run
-let a = "1"; // prompt("First number?", 1);
-let b = "2"; // prompt("Second number?", 2);

alert(a + b); // 12
```

-What we should do is to convert strings to numbers before `+`. For example, using `Number()` or prepending them with `+`.

-For example, right before `prompt`:

```js run
-let a = +prompt("First number?", 1);
-let b = +prompt("Second number?", 2);

alert(a + b); // 3
```

-Or in the `alert`:

```js run
-let a = prompt("First number?", 1);
-let b = prompt("Second number?", 2);

alert(+a + +b); // 3
```

-Using both unary and binary `+` in the latest code. Looks funny, doesn't it?