ANS:C - 4
3x - y = 27 = 33 x - y = 3 ....(i) 3x + y = 243 = 35 x + y = 5 ....(ii) On solving (i) and (ii), we get x = 4.
x - y = 3 ....(i)
3x + y = 243 = 35 x + y = 5 ....(ii)
On solving (i) and (ii), we get x = 4.
