(-24)*(1/2+1/3-1/4-7/12)/(-1又5分之1)
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(-24)*(1/2+1/3-1/4-7/12)/(-1又5分之1)(-24)*(1/2+1/3-1/4-7/12)/(-1又5分之1)(-24)*(1/2+1/3-1/4-7/12)/(-1又5分之
(-24)*(1/2+1/3-1/4-7/12)/(-1又5分之1)
(-24)*(1/2+1/3-1/4-7/12)/(-1又5分之1)
(-24)*(1/2+1/3-1/4-7/12)/(-1又5分之1)
(-24)*(1/2+1/3-1/4-7/12)/(-1又5分之1) =(-24)*(1/2+1/3-1/4-7/12)x(-5/6)
=20x(1/2+1/3-1/4-7/12)
=10+20/3-5-35/3
=5-5
=0
(-24)*(1/2+1/3-1/4-7/12)/(-1又5分之1)
=(-24)*(-5/6)*(1/2+1/3-1/4-7/12)
=20*(1/2+1/3-1/4-7/12)
=20*1/2+20*1/3-20*1/4-20*7/12
=10+20/3-5-35/3
=5-15/3
=5-5
=0
(1/2+1/3+1/4+1/6)*24
(-24)*(1/2+1/3-1/4-7/12)/(-1又5分之1)
简便计算:1、1/3+1/6+1/10+1/15+1/21+1/28+.+1/1202、1/4+1/12+1/24+1/40+.+1/198003、1+1/(1+2)+1/(1+2+3)+1/(1+2+3+4)+.+1/(1+2+3+4+.+50)4、(3*3-1)/(3*3+1)+(5*5-1)/(5*5+1)+(7*7-1)/(7*7+1)+.+(1995*1995-1
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