Answer: (1) Distributive (2) Commutative (3) Associative 
               (4) Commutative  (5) Addition Property of Equality
<u>Step-by-step explanation:</u>
1) Distributive
(x + 4) was multiplied by 3 and (2x - y) was multiplied by 5
2) Commutative
10x and -5y switched places
3) Associative
The parenthesis changed partners 
4) Commutative
(12y - 5y) and 10x switched places
5) Addition Property
Like terms were added together --> 3x + 10x = 13x and 12y - 5y = 7y
 
        
             
        
        
        
Answer:
1 11/21
Step-by-step explanation:
In order to convert 32/21 to mixed number, you follow these steps:
Divide the numerator by the denominator
32 ÷ 21 = 1 with a remainder of 11
Write down the whole number 1 and then write down the remainder as new numerator (11) above the denominator (21), As below:
1  11/21
 
        
                    
             
        
        
        
46+45=91 
Hope this helps!
        
             
        
        
        
The opposite sides are supplementary 
43+x=180
X=137