Answer:
Tell me if i am wrong. :)
Step-by-step explanation:
To solve for y:
Q.1   2x + y = -1
        y = -1 - 2x 
Q. 2.  4x - 5y = 7
         y = 7 - 4x over -5 
  
 
        
             
        
        
        
1 and 1/2x+3/4x=5/8
combine x's
1 and 1/2x=4/4x+2/4x=6/4x
6/4x+3/4x=5/8=9/4x
9/4x=5/8
multiply both sides by 8
18x=5
x=5/18
x=5/18 or aprox 0.277777777777
        
                    
             
        
        
        
6-z
Z-6 would be wrong because the question said start with 6
        
             
        
        
        
Answer:
z = 31
Step-by-step explanation:
A triangle adds up to 180 degrees 
Therefore this equation is formed: 61 + 3z + z -5 = 180
Simplify:
4z = 124
z = 31