Answer:
-4 or -9
Step-by-step explanation:
-a^2-13a-36=0
(-a-4)(a+9)=0
-a-4=0
a+9=0
a= -4, -9
1. 3/5=15m
2. 3/5m=15
3. 3/5+m=15
4. 3/5m=15
5. 3/5/m=15