5.6x0.125+2.4/8=5.6x（1/8）+2.4x（1/8）=（5.6+2.4）x（1/8）=8x1/8=1谢谢，请采纳
2.4除以8=0.4（5.6+0.4）*0.125=0.75
5.6x0.125+2.4除以8=5.6x0.125+2.4x0.125=(5.6+2.4)x0.125=1
