Answer:

Step-by-step explanation:
Let's use a start by using common denominators.  and
 and 
Now, replace the original equation with the common denominators. 
Solve! 
 
        
             
        
        
        
number 3 is not congruent but number 4 is because #4 is basically the same thing but you cant really multiply something to question #3 to get those answers.
 
        
                    
             
        
        
        
You would obviously only be able to create two sandwiches with the given information.
        
             
        
        
        
Answer:

Step-by-step explanation:
1) Divide both sides by 2.

2) Simplify 4/2 to 2.

3) Add 4 to both sides.

4) Simplify 2 + 4 to 6.

5) Divide both sides by 2.

6) Simplify 6/2 to 3.

<em><u>therefor</u></em><em><u>,</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>answer</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><em><u>z</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>3</u></em><em><u>.</u></em>
 
        
             
        
        
        
If u put in a graphing calculator and look at the table you can plot the points given