minor

1-js/02-first-steps/06-type-conversions/1-primitive-conversions-questions/solution.md

@@ -10,13 +10,15 @@ true + false = 1
 "4" - 2 = 2
 "4px" - 2 = NaN
 7 / 0 = Infinity
-" -9\n" + 5 = " -9\n5"
-" -9\n" - 5 = -14
-null + 1 = 1 // (3)
-undefined + 1 = NaN // (4)
+" -9  " + 5 = " -9  5" // (3)
+" -9  " - 5 = -14 // (4)
+null + 1 = 1 // (5)
+undefined + 1 = NaN // (6)
 ```
 
 1. The addition with a string `"" + 1` converts `1` to a string: `"" + 1 = "1"`, and then we have `"1" + 0`, the same rule is applied.
 2. The subtraction `-` (like most math operations) only works with numbers, it converts an empty string `""` to `0`.
-3. `null` becomes `0` after the numeric conversion.
-4. `undefined` becomes `NaN` after the numeric conversion.
+3. The addition with a string appends the number `5` to the string.
+4. The subtraction always converts to numbers, so it makes `"  -9  "` a number `-9` (ignoring spaces around it).
+5. `null` becomes `0` after the numeric conversion.
+6. `undefined` becomes `NaN` after the numeric conversion.

1-js/02-first-steps/06-type-conversions/1-primitive-conversions-questions/task.md

@@ -17,8 +17,8 @@ true + false
 "4" - 2
 "4px" - 2
 7 / 0
-"  -9\n" + 5
-"  -9\n" - 5
+"  -9  " + 5
+"  -9  " - 5
 null + 1
 undefined + 1
 ```