如题所述
第1个回答 2015-09-21
7.8×5.6+2.3 ×4.4
=5.5××5.6+2.3×5.6+2.3 ×4.4
=30.8+2.3×(5.6+4.4)
=30.8+2.3×10
=30.8+23
=53.8本回答被网友采纳
=5.5××5.6+2.3×5.6+2.3 ×4.4
=30.8+2.3×(5.6+4.4)
=30.8+2.3×10
=30.8+23
=53.8本回答被网友采纳
如题所述
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