Question

ПОМОГИТЕ С ЗАДАНИЕМ НА ФОТОГРАФИИ!

Answer 1

а)
1/2-1/7-1/4 / 2 5/14 - 1 8/21 - 1/3=

14/28-4/28-7/28 / 2 15/42 - 1 16/42 - 14/42 =

3/28 / 1 57/42 - 1 30/42=

3/28 / 27/42= 3/28 * 42/27 =

3/2*9=3/18=1/6

б)
-7 * 1 3/7 : (-1 2/3) / - 2,52 : (- 8,4)=

-7 * 10/7 : (- 5/3) / 0,3 =

(-10) * (-3/5) / 3/10 =

(2*3) * 10/3 = 2*10 = 20