-45 - 9n = -81
-9n = -81 + 45
-9n = -36
n = -36/-9
n = 4
Hope this helps you. :)
Answer:
4=n
Step-by-step explanation:
-81= -45-9n
+45 +45
-36= -9n
÷ -9 ÷-9
4= n
substitute:
-81= -45 -9 (4)
-81= -45 -36
-81= -81
