д)
13,13 : 1 2/11 = 1313/100 : 13/11 = 1313/100 * 11/13 = (101*11)/100 = 1111/100 = 11,11,
или:
13,13 : 1 2/11 = 13,13 : 13/11 = 13,13 * 11/13 = (сокращ. на 13) = 1,01 * 11 = 11,11,
е)
232,3 : 33 2/3 = 2323/10 : 101/3 = 2323/10 * 3/101 = (23*3)/10 = 69/10 = 6,9