7.2乘14.5+17乘2.8 这道题怎么简算？

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好像没有，但可以依次运算
7.2*14.5+17*2.8
=104.4+47.8
=152

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原式=7.2*15-7.2*0.5+2.8*15+2.8*2=（7.2+2.8）*15-3.6+5.6=150+2=152

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先算乘除再算加减啊
7.2*14.5=104.4
17*2.8=47.6
再相加 =152

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7.2*14.5+17*2.8
=(7+0.2)(15-0.5)+17*3-17*0.2
=105-3.5+3-0.1+51-3.4
=105-4+51
=152

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7.2*14.5+17*2.8
=(7+0.2)(15-0.5)+17*3-17*0.2
=105-3.5+3-0.1+51-3.4
=105-4+51
=152

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