Combine like terms: (Pay attention to the integer sign before each term)
-7n+-2n=-9n
6+-8=-2
-9n-2
Answer:my fat peen
Step-by-step explanation:
suck it
She made an error when subtracting
when subtracting 692-688, she forgot to subtract a 1 from the 9 in order to make the 2 a 12 :)