Answer:
Step-by-step explanation:
192
Answer:
r
=
1
,
0
Step-by-step explanation:
-7
+ 7r + 2 = 2
-7r(r-1)=2-2
-7r(r-1)=0
r-1=0
r=1
Answer:501
Step-by-step explanation: So basically you take 419-2 now thats 417+72=489+12=501
5^8 / 5^12 = 5^(8-12) = 5^-4 = 1/5^4