0.27x7.3+2.7x0.37-0.27用简便方法计算怎么做？解；0.27x7.3+2.7x0.37-0.27=0.27x7.3+0.27x3.7-0.27=0.27x(7.3+3.7-1)=0.27x10=2.7
