I think it's multiplication
        
             
        
        
        
Rope circle earth 6371 kilometers
        
             
        
        
        
Answer:
x=100
Step-by-step explanation:
75=3/4x
4/3 × 75 = x
4 × 75 = 300 
300/3= 100
100(3/4) = 75
x = 100
 
        
             
        
        
        
Answer:
0,1
-5,2 
Step-by-step explanation:
?
 
        
             
        
        
        
The answer is 705.666667. Rounded the answer is about 706. As a fraction it it 705 666667/1000000 (it cannot be simplified any further).
I hope this helps:)