计算下面各题(能简算的要简算)25×28 1﹣+﹣(2.5×73)×0.46.8﹣1.36﹣0.64.
15.8-(6+÷12.5%)
10-÷×1
325×0.36+6.75×36
5.6×0.375+×5.4-0.375×0.9
5.6x+4x=17.28