计算下面各题,能简便计算的用简便方法计算. 25×1.28×4; ×(+1÷); ×+÷4; ÷[×(+)].
325×0.36+6.75×36
5.6×0.375+×5.4-0.375×0.9
5.6x+4x=17.28
x+=
[一(一)]÷