(-1/2)-(-89.76)-(+1又4分之3)-(7.2)-(+89.76)-(-0.25)怎么算
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(-1/2)-(-89.76)-(+1又4分之3)-(7.2)-(+89.76)-(-0.25)怎么算
(-1/2)-(-89.76)-(+1又4分之3)-(7.2)-(+89.76)-(-0.25)怎么算
(-1/2)-(-89.76)-(+1又4分之3)-(7.2)-(+89.76)-(-0.25)怎么算
原式=-1/2+89.76-89.76-1又3/4+1/4-7.2
=-1/2-1又1/2-7.2
=-2-7.2
=-9.2
原式=-1/2+89.76-89.76-1又3/4+1/4-7.2
=-1/2-1又1/2-7.2
=-2-7.2
=-9.2
已知sin^22又+Sin2又cos又-cos2又=1,又∈(0,∏/2),求sin又,tan又的值.
-14又2/3-11又2/15-(-12又2/3)-14+(-11又2/15)(-4又1/8)-|-1+2+0.125|-|-3又1/3|-(-6又1/7)+(-5又1/7)又怎么做
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(2又1/3-3又1/2+1又1/45)÷(-1又2/3)
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(-2000又5/6)+(-1999又2/3)-(-4000又3/4)-(+1又1/2)
(-2005又5/6)+(-2004又2/3)+4010又2/3+(-1又1/2)
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计算:(-4又1/4)-(+3又1/8)+(-4又7/8)-(-5又1/2)
6又2/7+(12又1/3)-15-(+7又2/7)-(-12又1/3)
(2012又5/6)-2013又2/3+(-5又1/2)-(-4020又3/4)
【5又1/3+(8.7-3又1/2×2又1/7)】/19又3/5
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计算:(-15又2/3)+【13又2/3-|-4又2/15|+(-4又1/5)】