Answer:
0
Step-by-step explanation:
Because anything times 0 is 0
If you are just adding those two decimals together, the answer would be 100.871.
83.971
+ 10.900 (make believe there are two zeros)
—————-
100.871
20) Answer is: x=76
21) Answer is x=15
I can see it, it's too blurry and small