Пошаговое объяснение:
1) 18*( 1\3 -1\9) = 18/3 - 18/9 = 6 - 2 = 4
2) (2-3\4 -4\5 ) *20 = 40 - 60/4 - 80/5 = 40 - 15 - 16 = 9
3) (1-1\3 -1\6-1\9 )*18 = 18 - 18/3 - 18/6 - 18/9 = 18 - 6 - 3 - 2 = 7
4) (5\6 +5\9 ) *18\25= (18/25 * 5/6) + (18/25 * 5/9) = 3/5 + 2/5 = 1.
Пошаговое объяснение:
1) 18*( 1\3 -1\9) = 18/3 - 18/9 = 6 - 2 = 4
2) (2-3\4 -4\5 ) *20 = 40 - 60/4 - 80/5 = 40 - 15 - 16 = 9
3) (1-1\3 -1\6-1\9 )*18 = 18 - 18/3 - 18/6 - 18/9 = 18 - 6 - 3 - 2 = 7
4) (5\6 +5\9 ) *18\25= (18/25 * 5/6) + (18/25 * 5/9) = 3/5 + 2/5 = 1.