-1/36
Пошаговое объяснение:
1) 2,6 * 5/78 = 26/10 * 5/78 = 1/2 * 1/3 = 1/6
2) 1/6 - 0,75 = 1/6 - 75/100 = 1/6 - 3/4 = 2/12 - 9/12 = -7/12
3) -7/12 + 5/9 = -21/36 + 20/36 = -1/36
-1/36
Пошаговое объяснение:
1) 2,6 * 5/78 = 26/10 * 5/78 = 1/2 * 1/3 = 1/6
2) 1/6 - 0,75 = 1/6 - 75/100 = 1/6 - 3/4 = 2/12 - 9/12 = -7/12
3) -7/12 + 5/9 = -21/36 + 20/36 = -1/36