计算下面各题,能简算的要简算
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15又3/4-(15又3/4-2又5/8)
=15又3/4-15又3/4+2又5/8
=0+2又5/8
=2又5/8
5又5/6-0.21-1又1/6-1.79
=(5又5/6-1又1/6)-(0.21+1.79)
=4又2/3-2
=2又2/3
5.4+3又3/4+6.6+0.25
=(5.4+6.6)+(3又3/4+0.25)
=12+4
=16
10又4/5-(0.82+4又4/5)
=(10又4/5-4又4/5)-0.82
=6-0.82
=5.18
=15又3/4-15又3/4+2又5/8
=0+2又5/8
=2又5/8
5又5/6-0.21-1又1/6-1.79
=(5又5/6-1又1/6)-(0.21+1.79)
=4又2/3-2
=2又2/3
5.4+3又3/4+6.6+0.25
=(5.4+6.6)+(3又3/4+0.25)
=12+4
=16
10又4/5-(0.82+4又4/5)
=(10又4/5-4又4/5)-0.82
=6-0.82
=5.18
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