2 dates in a SQL stored proc - 7 days prior and 30 days in future

be careful using getdate() because it is actually the current date AND time, you can use cast(getdate() as date) to set the time to 00:00:00

select
  cast(getdate() as date) as today
, cast(getdate() as date) -7  as seven_days_ago
, cast(getdate() as date) +30 as thirty_days_from_now

Using integers for addition isn't common in TSQL coding, instead  using dateadd() is more common, i.e.

select
  cast(getdate() as date) as today
, dateadd(day,-7,cast(getdate() as date) ) as seven_days_ago
, dateadd(day,30,cast(getdate() as date) ) as thirty_days_from_now

These will also work:

 CONVERT(DATE, DATEADD(DAY, -7, GETDATE()))
 CONVERT(DATE, DATEADD(DAY, +30, GETDATE()))

[edit]
looking back at your originals it seems that you felt it necessary to alter the day and the month - individually - when using DATEADD(). Hopefully you can see that this isn't needed, dateadd() will accurately add or deduct the number of time units from a parameter datetime value.

If in doubt on how to use a function, books online will help: e.g.
https://docs.microsoft.com/en-us/sql/t-sql/functions/dateadd-transact-sql?view=sql-server-2017