Answer:
=
1
8 hope this helps!!! :) 
Step-by-step explanation:
1
2
⋅
−7
=
1
3
(
−
1
2
)
1
2
−
7
=
1
3
−1
2
)
1
2
−
7
=
1
3
−
1
2
)
Multiply by 1  
Combine multiplied terms into a single fraction  
Multiply by 1  
Add
to both sides of the equation
 
        
                    
             
        
        
        
Answer:
2. I am pretty sure that it is right angles are congruent. 
4. Angle O and R are congruent, never heard of their angles theorem but I think it might be related to CPCTC.
Step-by-step explanation:
Well a square is always used to represent a right angle so and both angle Q and N have squares and that should mean that they are both 90 degrees. Also while vertical angels are congruent, angles Q and N are not vertical from each other, Reflexive Property is if it is a side and not an angle I think. 
 
        
             
        
        
        
Yes, the partition gives the two brothers equal shares.
Step-by-step explanation:
Step 1:
Assume the entire field has an area of B. So one brother takes  ,
,  , and
, and  
 
So we need to calculate how much this brother takes in terms of B.
To do this we calculate how much  is.
 is.
Step 2:
To add  ,
, 
First take the LCM of the denominators 12, 6, and 4
The LCM is 12, we multiply the denominator to get the LCM value, this same value is multiplied to the numerator too.

Step 3:
One brother gets  , so we need to calculate how much the other brother gets.
, so we need to calculate how much the other brother gets.
The other brother's share = 
So both the brothers get equal shares
 
        
             
        
        
        
Answer:
this is explaining how to do it, you need to isolate the variable so you need to substract or add so that she is alone.
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Step-by-step explanation:
soution
3^1=x+2
3=2+x
3-2=x
1=x
x=1