Answer: 3m + 3
Explanation: If there's no coefficient in front of the variable, you can give it a coefficient of 1, so the -m can be thought of as -1m.
So our problem can be read as 5m - 1m - 1m + 3.
Now combine like terms.
Since 5m, -1m, and -1m are terms that contain an m, we can combine.
So 5m - 1m - 1m simplifies to 3m.
So our answer is 3m + 3
