(-3/2)+(-5/12)+5/2+(-7/12)
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(-3/2)+(-5/12)+5/2+(-7/12)(-3/2)+(-5/12)+5/2+(-7/12)(-3/2)+(-5/12)+5/2+(-7/12)解(-3/2)+(-5/12)+5/2+(-
(-3/2)+(-5/12)+5/2+(-7/12)
(-3/2)+(-5/12)+5/2+(-7/12)
(-3/2)+(-5/12)+5/2+(-7/12)
解(-3/2)+(-5/12)+5/2+(-7/12)
=(-3/2)+5/2+(-5/12)+(-7/12)
=(5-3)/2-(5/12+7/12)
=2/2-12/12
=1-1
=0
(-3/2)+(-5/12)+5/2+(-7/12)
=(5/2-3/2)-(5/12+7/12)
=1-1
=0
答:
(-3/2)+(-5/12)+5/2+(-7/12)
=(-3/2+5/2)+(-5/12-7/12)
=1+(-1)
=0
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