6/25x3/5+0.24÷5/2=0.24x3/5+0.24x2/5=0.24x(3/5+2/5)=0.24x1=0.24
简便计算6/25×3/5+0.24÷5/2=6/25×3/5+6/25×2/5=6/25×(3/5+2/5)=6/25×1=6/25