Answer:
12
Step-by-step explanation:
Just place 13 instead of n.
a(13) = 84 + (13 - 1)(-6)
= 84 + (12)(-6)
= 84 + (-72)
= 84 - 72
= 12(Answer)
x=8
x+7=15
-7 -7
the answer is -14.2
-10.7 + (-3.5)= -14.2
division