Answer & Explanation
ANS: 10
EQ 1=> X + X = 24 => 2X = 24 => X = 12
EQ 2=> X + Y =15 => 12 + Y = 15 => Y = 3
EQ 3=> Y + Z = 14 => 3 + Z = 14 => Z = 11
EQ 4=> 2Z - X => 2(11) - 12 => 22 - 12 = 10
EQ 1=> X + X = 24 => 2X = 24 => X = 12
EQ 2=> X + Y =15 => 12 + Y = 15 => Y = 3
EQ 3=> Y + Z = 14 => 3 + Z = 14 => Z = 11
EQ 4=> 2Z - X => 2(11) - 12 => 22 - 12 = 10