Помогите.Очень надо!! e) (1+1/2)(1-1/3)(1+1/4)(1-1/5)(1+1/6)(1-1/7)=

Question

Помогите.Очень надо!!
e) (1+1/2)(1-1/3)(1+1/4)(1-1/5)(1+1/6)(1-1/7)=

Answer 1

3/2 * 2/3 * 5/4 * 4/5 * 7/6 * 6/7 = 1