How many solutions does this have? -9n-5=-10n

Match each equation with the operation you can use to solve for the variable. subtract 10. divide by 10. divide by 5. subtract 18. multiply by 10. add 18. add 10. multiply by 5. 5 = 10p arrowright p + 10 = 18 arrowright p + 18 = 5 arrowright 5p = 10 arrowright

Can someone me and do the problem plz so i can understand it more better

Answer! if you don’t mind, can you explain