1) -13,5 : 1,5 = - 9
2) 6 1/2 * 1 5/11 = 13/2 * 16/11 = 104/11 = 9 5/11
3) - 9 - 9 5/11 = - 18 5/11
4) - 19,25 * 2/22 = - 19 1/4 * 2/22 = - 77/4 * 2/22 = - 7/4 = - 1 3/4
5) - 18 5/11 + (- 1 3/4 ) = -18 5/11 - 1 3/4 = - 18 20/44 - 1 33/44 =
= - 19 53/44 = - 20 9/44
Ответ минус 20 9/44