Question

1. Найдите значение выражения: (2.5-2-1 ) - ( -5 - -) + 1-1 : (-5.6)


срочно помогите​

Answer 1

Пошаговое объяснение:

1) 2,5 - 2 1/3 = 2 5/10 - 2 1/3 = 2 15/30 - 2 10/30 = 5/30 = 1/6

2) 1/6 * (-5 1/7) = 1/6 * (-36/7) = 1/1 * (-6/7) = -6/7

3) 1 1/3 * (-5,6) = 4/3 * (-56/10) = 2/3 * (-56/5) = -112/15 = -7 7/15

4) -6/7 + (-7 7/15) = -6/7 - 7 7/15 = -90/105 - 7 49/105 = -7 139/105 = -8 34/105