Answer:
£7.3 
Step-by-step explanation:
2 x £2=£4
3 x £3 = £6
3 x 90 = 270 = £2.7
£4+£6+£2.7= £12.7
20-12.7=7.3
7 pounds and 3 
 
        
                    
             
        
        
        
Answer:
x=-3.5
Step-by-step explanation:
-3x=10.5 divide both sides by -3
 
        
                    
             
        
        
        
Answer: -12
Step-by-step explanation:
 
        
             
        
        
        
Answer:
10
Step-by-step explanation:
 
        
             
        
        
        
The answer is a=7 because you have to do 7-6 which equals to 2 which a=7 is the right answer