12n-8n-10=-18
COMBINE!! (:
12n-8n
= 4n
4n-10=-18
+10 +10
ADD 10 TO BOTH SIDES (after the equal sign.)
4n=-8
-- --
4 4
n=-2 which is your final answer! (:
I hope all is well, and you pass! (: Good luck, rockstar! (: If you have any more problems like these - let me know!