Answer:

Step-by-step explanation:
To solve this question, we will first expand the expression using the distributive rule: 
Therefore:

Simplify:

Add up like terms:

 
        
                    
             
        
        
        
Answer:
22.75
Step-by-step explanation:
you substitute the 7 in for c and d. Following PEMDAS, you would then do (1/4) multiplied by 7 and 3 times 7. add those 2 together and you get 22.75 :)
 
        
             
        
        
        
If they are two positive numbers, do it normally. If there is a negative and a positive, change it to addition and switch the SECOND integer sign. Only works with two integer…s in a subtraction question.
        
             
        
        
        
Positive product:
(-2/5)(-2/5)
(2/5)(2/5)
negative product:
(-2/5)(2/5)
(2/5)(-2/5)