Question

13 = 5m - 2 help please

Answer 1

If you want to know what is the number of m so first you can add 2 on both sides of equation like : 13 = 5m - 2 
                            +2        +2 ⇒ 13 + 2 = 5m ⇒ 15 = 5m ⇒ 15/5 = m ⇒ 3=m :))
i hope this be helpful 
have a nice day 

Answer 2

13=5m-2
+2 +2

15=5m
_____
5


m=3