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2/3,1/2,3/7,7/18,() A.5/9;B.4/11;C.3/13;D.2/5
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3,3,4,5,7,7,11,9,()A.13,11 B.16,12 C.18,11 D.17,13
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2/3, 1/2, 3/7, 7/18,() A.5/9 B.3/13 C.4/11 D. 2/5
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3,3,4,5,7,7,11,9,() A.13,11 B.16,12 C.18,11 D.17,13
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3,3,4,5,7,7,11,9,(),()A.13.11 B.16,12C.18,11D.17,13
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3,3,4,5,7,7,11,9,(),()A.13, 11B.16,12C.18,11D.17,13
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我会计算。12-9+5=11-3+10=10+5-8=13+5-9=12-8+6=17-9+5=17-8+6=13-6+6=11+4-7=12+5-8=4+8-9=10-3+6=我会计算。 12-9+5= 11-3+10= 10+5-8= 13+5-9= 12-8+6= 17-9+5= 17-8+6= 13-6+6= 11+4-7= 12+5-8= 4+8-9= 10-3+6=