Найдите значение вырожения: 1). (-6 2/5+3) * (3-4,5) * 5/17; 2). ((-2 1/2) * 8 - (-6) * 1 4/5*0,5; 3). (7 3/5 * (-2,5) - 4 3/20 * (-10)) * (2-3 4/25).

1) ( - 6 2/5 + 3) * (3 - 4,5) * 5/17 = ( - 32/5 + 15/5) * ( - 1,5) * 5/17 = - 17/5 * ( - 1,5) * 5/17 =

= 25,5/5 * 5/17 = 25,5/17 = 1,5;

2) (( - 2 1/2) * 8 - ( - 6) * 1 4/5 * 0,5 = (( - 5/2) * 8 + 6 * 9/4 * 0,5 = - 40/2 + 54/4 * 0,5 = - 20 +

+ 27/4 = - 20 + 6,75 = - 13,25;

3) (7 3/5 * ( - 2,5) - 4 3/20 * ( - 10)) * (2 - 3 4/25) = (38/5 * ( - 2,5) - 83/20 * ( - 10)) *

* (2 - 79/25) = ( - 95/5 + 830/20) * (2 - 79/25) = ( - 95/5 + 83/2) * (50/25 - 79/25) = ( - 190/10 +

+ 415/10) * ( - 29/25) = 225/10 * ( - 29/25) = 9/10 * ( - 29/1) = - 261/10 = - 26,1.