(49-1/8)x1/8+(46-1/8)x1/8+(43-1/8)x1/8+.+(1-1/8)x1/8=?一定要正确的答案,有重赏

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(49-1/8)x1/8+(46-1/8)x1/8+(43-1/8)x1/8+.+(1-1/8)x1/8=?一定要正确的答案,有重赏

(49-1/8)x1/8+(46-1/8)x1/8+(43-1/8)x1/8+.+(1-1/8)x1/8=?一定要正确的答案,有重赏
(49-1/8)x1/8+(46-1/8)x1/8+(43-1/8)x1/8+.+(1-1/8)x1/8=?
一定要正确的答案,有重赏

(49-1/8)x1/8+(46-1/8)x1/8+(43-1/8)x1/8+.+(1-1/8)x1/8=?一定要正确的答案,有重赏
(49-1/8)x1/8+(46-1/8)x1/8+(43-1/8)x1/8+.+(1-1/8)x1/8
=[(49+46+43+...+4+1)-(1/8+1/8+...+1/8)]*1/8
=[8*50+25-17/8]/8
=[8*425-17]/64
=3293/64
这下正确了,加分吧

9751/64

(49-1/8)x1/8+(46-1/8)x1/8+(43-1/8)x1/8+........+(1-1/8)x1/8
=[(49+46+43+...+4+1)-(1/8+1/8+...+1/8)]*1/8
=[8*50+25-17/8]/8
=[8*425-17]/64
3383/64