解方程.4x﹣0.4=9.42(14x﹣5x)=8.12(x﹣3)=11.6.
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