(2.65+2.77)/(1.98-0.98)怎么简便计算
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(2.65+2.77)/(1.98-0.98)怎么简便计算
(2.65+2.77)/(1.98-0.98)怎么简便计算
(2.65+2.77)/(1.98-0.98)怎么简便计算
(2.65+2.77)/(1.98-0.98)
=【2.62+(0.03+2.77)】/【(1+0.98)-0.98】
=【2.62+2.8】/【1-(0.98-0.98)】
=5.42/1
=5.42
=5.42/1=5.42
=5.42/1
=5.42
﹙2.65+2.77﹚÷﹙1.98-0.98﹚
=﹙2.65+2.77﹚÷1
=2.65+3-0.23
=5.65-0.23
=5.42