4.2-1.38+5.8-3.62简便计算

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4.2-1.38+5.8-3.62简便计算
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4.2-1.38+5.8-3.62简便计算
4.2-1.38+5.8-3.62简便计算

4.2-1.38+5.8-3.62简便计算
4.2-1.38+5.8-3.62
=4.2+5.8-(1.38+3.62)
=10-5
=5

4.2+5.8-(1.38+3.62)=5

(4.2+5.8)-(1.38+3.62)

4.2+5.8-(1.38+3.62)=5

4.2-1.38+5.8-3.62=4.2+5.8-(1.38+3.62)=10-5=5

4.2-1.38+5.8-3.62
=(4.2+5.8)-(1.38+3.62)
=10-5
=5