(-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

(-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