X + 2/3 = -2(4/5x-7)
Is equivalent to -2(x+2/3)=4/5x-7
So the answer would be A
        
             
        
        
        
For this case we must solve the following system of equations:

We clear x of both equations:

We match:

We find the value of "x":

Thus, the solution of the system is:

Answer:

 
        
             
        
        
        
0.01 gram is equal to B. 1 centigram.
        
                    
             
        
        
        
Answer:
take 121 subtract it from 180 and you get 59 so angle d is 59°. and angle b is 154°