(3.7*1.2+4.3*1.2)*1.25简便计算
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(3.7*1.2+4.3*1.2)*1.25简便计算
(3.7*1.2+4.3*1.2)*1.25简便计算
(3.7*1.2+4.3*1.2)*1.25简便计算
=(1.2* (3.7+4.3))*1.25
=(1.2*8)*1.25
=1.2*(8*1.25)
=1.2*10
=12
(3.7*1.2+4.3*1.2)*1.25
=[1.2*(3.7+4.3)]*1.25
=1.2*8*1.25
=1.2*(8*1.25)
=1.2*10
=12
完毕
3.7*1.2+4.3*1.2)*1.25
=(3.7+4.3)*1.25*1.2
=8*1.25*1.2
=10*1.2
=12