Answer: The number 0
x^2 + 8x - 4 = x^2 + 8
8x - 4 = 8 ... subtract x^2 from both sides
8x = 12 .... add 4 to both sides
x = 12/8 .... divide both sides by 8
x = 3/2 ... reduce
x = 1.5 .... convert to decimal form
Now plug x = 1.5 into the expression 2x-3 and simplify
2x-3 = 2*1.5-3 = 3-3 = 0 which is the answer
 
        
             
        
        
        
Solutions 
1) Find the least common denominator of 7/10 and 1/5. 
10: 10 
5 : 5 , 10 
The least common denominator is 10. 
2) Make the denominator of 1/5 to 10. Multiply numerator and denominator by 2.
1 x 2 = 2 
5 x 2 = 10
3) New fraction 
7/10 + 2/10 
4) Add 
7+2 = 9 
9/10 is answer 
9/10 can not be simplified. It is already in reduced form. 
  
        
                    
             
        
        
        
Answer:
690%
Step-by-step explanation:
To find the percent increase, take the new amount and subtract the original amount
5600000-80000=5520000
Divide it by the original amount
5520000/800000
6.9
Multiply this by 100% to change from decimal form to percent form
6.9*100%
690%