1又3/10+3又3/40+5又3/88+7又3/154+9又3/238+11又3/340 拆分求值,麻烦说的详细点.

1又3/10+3又3/40+5又3/88+7又3/154+9又3/238+11又3/340 拆分求值,麻烦说的详细点.
1又3/10+3又3/40+5又3/88+7又3/154+9又3/238+11又3/340 拆分求值,麻烦说的详细点.

1又3/10+3又3/40+5又3/88+7又3/154+9又3/238+11又3/340 拆分求值,麻烦说的详细点.
1又3/10+3又3/40+5又3/88+7又3/154+9又3/238+11又3/340
=（1+3+5+7+9+11）+（3/10+3/40+3/88+3/154+3/238+3/340 ）
=6×6+3×（1/10+1/40+1/88+1/154+1/238+1/340）
=36+（1/2-1/5+1/5-1/8+1/8-1/11+1/11-1/14+1/14-1/17+1/17-1/20）
=36+1/2-1/20
=36.45

1又3/10+3又3/40+5又3/88+7又3/154+9又3/238+11又3/340
=(1+3+5+7+9+11)+(3/10+3/40+3/88+....+3/340)
=(1+11)*6/2+(1/2-1/5+1/5-1/8+1/8-1/11+...+1/17-1/20)
=36+(1/2-1/20)
=36+9/20
=36又9/20（1/2...

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1又3/10+3又3/40+5又3/88+7又3/154+9又3/238+11又3/340
=(1+3+5+7+9+11)+(3/10+3/40+3/88+....+3/340)
=(1+11)*6/2+(1/2-1/5+1/5-1/8+1/8-1/11+...+1/17-1/20)
=36+(1/2-1/20)
=36+9/20
=36又9/20

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