Answer: -1/5
Step-by-step explanation:
14/20 - 81/90=
7/10-9/10=       ==> 10 is the GCF of 20 and 90
(7-9)/10=
-2/10=-1/5
 
        
                    
             
        
        
        
Answer:
16 pieces of spearmint gum 
Step-by-step explanation:
For every five pieces of peppermint gum, there are 2 pieces of spearmint gum. 
First, divide the total number of peppermint gum by 5:
40/5 = 8
Multiply this number by 2 (pieces of spearmint) to get the number of spearmint gum pieces:
8 x 2 = 16
Proof:
Ratio is 40 : 16, dividing this by 8 will reduce the ratio to 5:2 
 
        
             
        
        
        
Answer: f  (
x)   =  −
50
Step-by-step explanation: