If i,j,k are ideals of a commutative ring with unity, then please show the properties - 1). (i:j):k = i:jk = (i:k):j 2). (i:j):j is subset

If I,J,K are ideals of a Commutative ring with unity, then please show the properties - 1). (I:J):K = I:JK = (I:K):J 2). (I:J):J is subset of I