Question

能简便的用简便计算

53.78-13.6-37.4+6.22
60-（21.5-8.8）+7.3
递等式计算

Answer 1

(53.78+6.22)-(13.6+37.4)=60-51=9
60+8.8+7.3-21.5=54.6

Answer 2

53.78+6.22-（13.6+37.4）=9
60+8.8+7.3-21.5=54.6

追问

递等式计算

追答

那我不懂什么叫递等式啊

Answer 3

• 53.78-13.6-37.4+6.22

• =60-(13.6+37.4)

• =60-51

• =9

   

Answer 4

53.78+6.22=60 13.6+37.4=41 60-41=19

追问

递等式计算

Answer 5

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