Answer:
8
Step-by-step explanation:
1. multiply 5 and 12 to get 60
2. multiply 5 and m to get 5m
3. the equation would be 60 + 5m = 100
4. next, subtract 60 on both sides
5. your equation so far is 5m = 40
6. then divide 5 on both sides
7. then you have your answer m = 8