(1 / 7) + (3 / 8) + (7 / 36) + (29 / 56) + (37 / 63) + (41 / 72) + (53 / 77) + (29 / 84) + (3 / 88) =1/7+3/8+(3/4-5/9)+(1/7+3/8)+(1/7+4/9)+(1/8+4/9)+(1/7+6/11)+(3/7-1/12)+(1/8-1/11) =(1/7+1/7+1/7+3/7+...