Question

How do you solve `5abs(9-5n)-7=38`?

Answer 1

`m=0` or `m=18/5`

Explanation:

`5|9-5m|-7=38` means

`5|9-5m|=38+7=45` or

`|9-5m|=45/5=9`

Hence either `9-5m=9` or `-5m=0` and `m=0`

or `-(9-5m)=9` or `5m=18` or `m=18/5`