(7/12+3/4):(-8/27)+(2-3 2/5)*25/28

Спасибо!!!

1) 7/12 +3/4 = 7/12 + 9/12 = 16/12 = 4/3 = 1 1/32) 4/3 : (- 8/27) = - 4/3 * 27/8 = - 9/2 = - 4 1/23) 2 - 3 2/5  =  - 1 2/54) -1 2/5 * 25/28 = -7/5 * 25/28 = - 5/4 = - 1 1/45) - 4 1/2 + (-1 1/4) = -4 2/4 - 1 1/4  = -5 3/4