Answer:
The answer is -3.4. If you have to round it, round it down to 3.
Step-by-step explanation:
 
        
             
        
        
        
Answer:
a=0 b=6 c=4 on edge exercise 
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
a) Add 4 to both sides, and then divide by 2. The solution is  .
.
Step-by-step explanation:
Question:
Which of the following describes the correct process for solving the equation 2x − 4 = 20 and arrives at the correct solution?
a) Add 4 to both sides, and then divide by 2. The solution is x = 12.
b) Divide both sides by −4, and then subtract 2. The solution is x = −7.
c) Subtract 4 from both sides, and then divide by 2. The solution is x = −12.
d) Multiply both sides by −4, and then divide by 2. The solution is x = −40.
Solution:
Given equation:

We need to determine the steps in order to solve for  .
.
Solving for  .
.
Step 1: Adding 4 both sides.


Step 2: Dividing both sides by 2.

∴ 
Thus, we added 4 both sides and then divided both sides by 2 to get solution = 12