Answer:
r=10
Step-by-step explanation:
Answer:
something
Step-by-step explanation:
The correct answer for this would be -10
Answer:
-765
Step-by-step explanation:
-2-7 * 109
-2 - 763
-765
It is 9*9 21 times so
9*9*9*9*9*9*9*9*9*9*9*9*9*9*9*9*9*9*9*9*9=
1.09418989e20 is the answer.