简算 18.75+(21.25--4.59)

问题描述:

简算 18.75+(21.25--4.59)

18.75+(21.25-4.59)=18.75+21.25-4.59=40-(5-0.41)=40-5+0.41=35+0.41=35.41

去掉括号

18.75+(21.25-4.59)
=(18.75+21.25)-4.59
=40-4.59
=35.41

18.75+21.25-4.59
=40-4.59
=35.41