Find the difference when -3n -7 is subtracted from n+4

Write out the subtraction in the proper order.  You subtract -3n-7 FROM n+4.  Thus, you must write n+4 FIRST.  Next, insert a subtraction sign (-), followed by (-3n-7).  MUST include those parentheses!

Here's what you should get:  n + 4 - (-3n-7).  Now remove the parentheses, changing signs where necessary:

n+4+3n+7.  combine like terms (that is, combine the "n" terms and then combine the two numerals 4 and 7.

Write out your final result below.