Question

Выполните действия:

(6 3/8-2 3/4)*(-4)+7/18*9

Answer 1

(6 3/8-2 3/4)*(-4)+7/18*9 = (51/8  - 11/4)*(-4) + 7/2 = ((51 - 22)/8)*(-4)) +7/2 = 
29*(-4)/8 +7/2 = -29 /2 +7/2 = (-29 + 7)/ 2 = -22/2 = - 11

1) (6 3/8-2 3/4) = 51/8 - 11/4 = (51-22)/8 = 29/8
2) 29/8 * (-4) = -29*4/8 = -29/2
3) 7/18  * 9 = 7*9/18 = 7/2
4) -29/2  + 7/2 = (-29+7)/2 = -22/2 = -11