First, you must use ADDITION to find -12 + 8 (-4)
Then, use MULTIPLICATION to find -4*2 (16
1) Addition
2) Multiplication
        
                    
             
        
        
        
Answer:
y= 1/2x -5
Step-by-step explanation:
First, you multiply 1/2 with x, and 1/2 with -2, which then makes the equation
y+4=1/2x -1
then, you have to subtract 4 from both sides of the equation and combine -1 and -4, which gets you -5.
Then the equation turns out to be 
y=1/2x-5
 
        
             
        
        
        
Ten thousands place: 0
ten millions place: 3