(2+59)*18/2=549
2+5+8+11+14+17.56+59=
11个回答
相关问题
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第二提题用简便方法计算2+5+8+11+14…+56+59
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2+5+8+11+14+.+59=?
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2/5 5/8 8/11 11/14 1 1/17=?
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转化率 (8 11:56:59)
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12.56+2.8-8.56,15.75+3.59-0.59+14.25,97+365+10
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1/2*5+1/5*8+1/8*11+1/11*14+1/14*17=?
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3/2*5+3/5*8+3/8*11+3/11*14+3/14*17
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用简便方法计算:1/(2*5)+1/(5*8)+1/(8*11)+1/(11*14)+1/(14*17)+1/(17*2
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1/5*8+1/8*11+1/11*14+1/14*17+1/17*20=?怎样算
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2+5+8+11+……+59=