Answer is 7.
55+5X=90
5X=90-55
5X=35
X=35/5
X=7
        
             
        
        
        
Answer:

Step-by-step explanation:
Solve the value of  :
 :

-Combine  and
 and  by subtracting
 by subtracting  by
 by  :
 :


-Subtract  on both sides:
 on both sides:


-Multiply both sides by  , the reciprocal of
, the reciprocal of  :
 :



Therefore, the value of  is
 is  .
.
 
        
             
        
        
        
Multiply the denominator by 4