Question 2410
 
   4a + b = 16     ...    (1)
 
   2a + 3b = 24    ...    (2)
 
Eq.(1)*3, we get
 
   12a + 3b = 48    ...    (3)
Eq.(3)-(2)
 
   10a = 24

   so, a = 2.4.   By substituting this value of a in eq.no.1, we get
 
   4*2.4 + b = 16
 
   b = 16 - (4*2.4) i.e  =   16 - 9.6
 
   b = 6.4

   a = 2.4;  b = 6.4;        Answer.
   Is it clear now?

   gsm