Question

Ребята срочно умоляю!​

Answer 1

Ответ:

,a=1+1/2+4/1+8/1=1+7/8=15/8

b=1+1/3+6/1+9/1=1+11/18=29/18

(a+b):(a-b)=

1)a+b=15/8+29/18=179/72

2)a-b=15/8-29/18=179/91

3)179)72:179/91=72/91