(3.5+(15-1.5))*7.6怎么简便计算?急急!!!!!!!!!!!!!!!!!!!!!!!!!!1

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(3.5+(15-1.5))*7.6怎么简便计算?急急!!!!!!!!!!!!!!!!!!!!!!!!!!1

(3.5+(15-1.5))*7.6怎么简便计算?急急!!!!!!!!!!!!!!!!!!!!!!!!!!1
(3.5+(15-1.5))*7.6怎么简便计算?
急急!!!!!!!!!!!!!!!!!!!!!!!!!!1

(3.5+(15-1.5))*7.6怎么简便计算?急急!!!!!!!!!!!!!!!!!!!!!!!!!!1
(3.5+(15-1.5))*7.6
=(3.5-1.5+15)*7.6
=17*(7+0.6)
=119+10.2
=129.2