Slump sale

in the case of slump sale, there is a difference in the value of assets transfered in the transferor's book and value of assets transfered in the transferee's book. how we can find the difference? in this case 4 assets are transefered and there is a difference in the total value of assets in the books of both company. value of 2 assets matched individually but other 2 assets doesnt match. kindly help me to solve this problem.