Ответ:
1) 10:5/9=10*9/5; 2*9=18
3)9/16:36=16/9*36=16*9=144
не понятна запись
28+24=52
1300 за 52 билета
1 билет = 1300/52 =25
28*25=700
24*25=600
1) |-5,2 + 1,8| = 3.4
|-2/9 - 5/9| = 7/9
2)
a) -1/4 * (-6.94) * 0.4 = 0.694
b) 11/8 * (-3,47) * (-8) = 11*3.47 = 38.17
c) (-0.001) * (-5.4) * 50 * (-2) = (-0.1) * 5.4 = -0.54
3)
A)86.719*64.9 - 86.719*164.9 = 86.719*(64.9-164.9) = -8671.9
B) 2.3*(-1/2) + 3.7*(-1/2) = (-1/2)*(2.3+3.7) = -2.5
C) ( 3/4 - 1/9 + 2/3)*36 = 27 - 4 + 24 = 47