The answer is 7/40.
To solve, you have to find the LCM (least common denominator) for 5/8 and 4/5. 5/8= 25/40 and 4/5= 32/40. Subtract and you get 7/40. That is your answer.
        
             
        
        
        
Ten times greater than 6.6*10^10 and 3*10^7
        
             
        
        
        
|a| = b gives
a =b or a = -b
so,
|-x| = -10 
gives 
-x = -10 or -x = 10
x = 10, -10
now let us verify,
when x = 10, |-10| = +10 and it is not = -10
so, x= 10 is NOT a solution.
when x = -10, |-(-10)| = |10| = 10 and it is not = -10
so, x= -10 is NOT a solution. 
hence, this equation  does not have a solution.
If we know that |...| can never be negative, we can directly deduce that this equation does not have any solution.
        
                    
             
        
        
        
Answer:
84
Step-by-step explanation: