(1)4/3,1,2,7,()(2)3/15,1/3,3/7,1/2,()
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(1)4/3,1,2,7,()(2)3/15,1/3,3/7,1/2,()(1)4/3,1,2,7,()(2)3/15,1/3,3/7,1/2,()(1)4/3,1,2,7,()(2)3/15,1/3
(1)4/3,1,2,7,()(2)3/15,1/3,3/7,1/2,()
(1)4/3,1,2,7,()
(2)3/15,1/3,3/7,1/2,()
(1)4/3,1,2,7,()(2)3/15,1/3,3/7,1/2,()
(1)4/3,1,2,7,(24)
4/3*3-3=1
1*3-1=2
2*3+1=7
7*3+3=24
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(1)4/3,1,2,7,()(2)3/15,1/3,3/7,1/2,()
(1-3/2*4)*(1-3/3*5)*...*(1-3/7*9)
7(1)(2)(3)
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7/2+9/4+(-1/3)-0.25+(-1/6)
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帮忙做一道简便运算1/1+(2/1-1/2)+(3/1-2/2+1/3)+(1/4-3/2+2/3-1/4)+...+(9/1-8/2+7/3-6/4+...+1/9)