8.59+2.57+3.43+5.47怎么用低等式计算

问题描述:

8.59+2.57+3.43+5.47怎么用低等式计算

8.59+2.57+3.43+5.47
=8.59+5.47+(2.57+3.43)
=14.06+6
=20.06