- 46 + 42 =

- 4

To add 46 and 42 together, follow these steps:

1. Start by lining up the numbers vertically, with the ones digits (6 and 2) aligned.
```
46
+ 42
```
2. Add the ones digits together: 6 + 2 = 8.
```
46
+ 42
--
8
```
3. Write down the 8 beneath the line.
```
46
+ 42
--
8
```
4. Now, move to the next column and add the tens digits: 4 + 4 = 8.
```
46
+ 42
--
88
```
5. Write down the 8 beneath the line.
```
46
+ 42
--
88
```
6. There are no more columns to add, so our final answer is 88.
```
46
+ 42
--
88
```

Therefore, 46 + 42 = 88.