kirill1410 -4.5-(-3)/-4.5*(-3)
-9/2+3/13.5
3-9/2/27/2
(3-9/2)*2/27
6-9/2 * 2/27
(6-9)*2/2*27
(6-9)/27
-3/27
ответ: -1/9
/-дробь