如题所述
2.6/0.5-5.2Ã0.5
= 2.6Ã2-2.6
=2.6
= 2.6Ã2-2.6
=2.6
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第1个回答 2016-01-31
2.6/0.5-5.2×0.5
=2.6×2-5.2×0.5
=5.2-5.2×0.5
=5.2×（1-0.5）
=5.2×0.5
=2.6
=2.6×2-5.2×0.5
=5.2-5.2×0.5
=5.2×（1-0.5）
=5.2×0.5
=2.6
