18.5-(5.6+4.8)/1.3怎么简便运算

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18.5-(5.6+4.8)/1.3怎么简便运算
18.5-(5.6+4.8)/1.3怎么简便运算

18.5-(5.6+4.8)/1.3怎么简便运算
18.5-(5.6+4.8)/1.3
=18.5-10.4/1.3
=18.5-8
=10.5

要么(18.5×1.3-5.6-4.8)/1.3=13.65/1.3=10.5如何?

18.5-(5.6+4.8)/1.3
=18.5-(5.6-0.4+0.4+4.8)/1.3
=18.5-(5.6-0.4)/1.3-(0.4+4.8)/1.3
=18.5-5.2/1.3-5.2/1.3
=18.5-4-4
=10.5