Question

[(27 supra 18 - 7supra 24 - 5 supra 36):(-17 supra 24) -(-0,8(3))] : (0,25)

Answer 1

[(27/18 - 7/24 - 5/36):(-17/24 -( -0,8(3))]:0,25

(27/18 - 7/24 - 5/36) = (108 - 21 - 10)/72 = 77/72;

-17/24 + 0,8(3)= -17/24 + 75/90 = (-17.15 + 4.75)/90 = 75/90 = 25/30;

(77/72):(25/30) = (77/72).(30/25)= 2310/1800  = 77/60;

(77/60):0,25 = (77//60) = (77.4)/60 = 77/15 = 5,1 (3)