Вычислите:
(2 5/6-7 1/9)•(-0,54):(-0,7)
--------------------------------------------- =
(4/23•(-5/19)-3/23•(-3/19))•(-5,75)

((75-142)/18)×(-0,54)÷(-0,7)
-------------------------------------- =
(20/437)-51,75/437

=(36,18/18)÷(-0,7) -361.8/126 -2,87
------------------------ =----------------- = ------' =41
-31,75/437 -31,75/437 -0,07