[(1.8-0.6)÷□+2.5]×0.4=3.4□中填_.

问题描述:

[(1.8-0.6)÷□+2.5]×0.4=3.4□中填______.

1.2÷□+2.5=3.4÷0.4,    1.2÷□+2.5=8.5,        1.2÷□=8.5-2.5,        1.2÷□=6,□=1.2÷6,□...