12+6/7n=-25n   add 25n and subtract 12 on both sides
25 6/7n=-12   convert to improper fraction
181/7n=-12   multiply both sides by seven to clear the fraction
181n=-84   divide both sides by 181 to get your answer
n= -.46   hope that helps.. 
 
        
             
        
        
        
Add 5/9 to both sides. common denominator would be 72 so you would multiply the top and bottom of 3/8 by 9 (bc 9x8 is 72) to get 27/72. you would multiply top and bottom of 5/9 by 8 to get 40/72 and you would add 40+27 which equals 67 so x=67/72 i believe
        
                    
             
        
        
        
Answer:
a. 9
b. 6
Step-by-step explanation:
a. z=12 - 3= 9
b. (36 - 18)/3= Z
 
        
             
        
        
        
Answer:
2
Step-by-step explanation:
 
        
             
        
        
        
Answer:
x=3/4
Step-by-step explanation:
x/3=1/2^2
4x=3
4x/4=3/4
x=3/4