"Dividing<span> by </span>fractions<span> is just like multiplying </span>fractions<span>, except for one additional step. To </span>divide<span> any number by a </span>fraction<span>: First step: Find the reciprocal of the </span>fraction<span>. Second step: Multiply the number by the reciprocal of the </span>fraction<span>." -Google</span>
        
                    
             
        
        
        
X+30+70=180
x+100=180. -100 both sides
x=80
|x=80° |
        
             
        
        
        
Step-by-step explanation:
taking common (a-b)
so we get the answer
 
        
             
        
        
        
Answer:
f(1/3) = 9
Step-by-step explanation:
f(x)=1/x+2/x
Combine terms
f(x) = 3/x
f(1/3) = 3 / (1/3)
f(1/3) = 9