(7,4-3 2/3):8-1 помогите плез

Question

(7,4-3 2/3):8-1 помогите плез

Answer 1

(7,4 - 3 2/3) : 8 - 1
7,4= 74/10. 74*3=222. 10*3=30
3 2/3=11/3. 11*10=110. 3*10=30
(222/30 - 110/30) : 8 - 1 = 112/30 :8 - 1= 112/30*1/8 - 1=14/30 - 1= -16/30