2.4/1又24分之31x4.125-(18又5分之37-13.42)=?2.4/1又31分之24x4.125-(18又37分之5-13.42)=?

问题描述:

2.4/1又24分之31x4.125-(18又5分之37-13.42)=?
2.4/1又31分之24x4.125-(18又37分之5-13.42)=?

是 2.4/1又31分之24x4.125-(18又37分之5-13.42)吗?那么2.4/1又31分之24x4.125-(18又37分之5-13.42)=2.4x(31/55)x4.125-(18又37分之5-13.42)=2.4x31x0.075-18又37分之5+13.42=0.3x31x8x0.075-18又37分之5+13.42=5.5...