The two fractions are divisible by 2, can be broken down 
        
             
        
        
        
Answer:
129
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
32
Step-by-step explanation:
8x4=32
 
        
                    
             
        
        
        
Answer:
x = 7
Step-by-step explanation:
13x - 1 = 90
       +1     +1
13x = 91
divide 13 by both sides of the equal sign
x = 7 
 
        
             
        
        
        
Answer:
120√6
Step-by-step explanation:
Simplify the 5√8 to 2√2
simplify the √18 to 3√2 
so it would be √3 * 2√2 * 5 * 2√2 * 3√2
when a square root of an expression is multiplied by itself: 
√3 * 2 * 2* 5 * 2 * <em>3</em>√2
so as we calculate it, 2 * 2* 5 * 2 * <em>3</em> = 120 and √2 * √3 = 6