Помогите -2,5×(2/5)-11,2:7/9
-2,5 *(2/5) - 11,2 : /7/9 = -2 1/2 * 2/5 -11 2/10 : 7/9 = - 5/2 *2/5 - 11 1/5 : 7/9 = -5/2 * 2/5 - 56/5 : 7/9 = -1 - (56 * 9) / (5 * 7) = -1 - 72/5 = -1 - 14 2/5 = -1 -14,4 = - 15,4