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计算下面各题,怎样简便就怎样算.17×﹙5/34＋4/57﹚×19205×205/102
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计算下面各题,怎样简便就怎样算.17×﹙5/34＋4/57﹚×19 205×205/102
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17×﹙5/34＋4/57﹚×19
=17×5/34×19+17×4/57×19
=（17×5/34）×19+17×（4/57×19）
=5/2×19+17×4/3
=47+1/2+22+2/3
=70+1/6
205×205/102
=205×（2+1/102）
=205×2+205/102
=210+2+1/102
=212+1/102
=17×5/34×19+17×4/57×19
=（17×5/34）×19+17×（4/57×19）
=5/2×19+17×4/3
=47+1/2+22+2/3
=70+1/6
205×205/102
=205×（2+1/102）
=205×2+205/102
=210+2+1/102
=212+1/102
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