作业帮2又4/5*23.4+11.1*57.6+6.54*28
来源：学生作业帮助网 编辑：作业帮 时间：2024/07/27 03:55:59
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2又4/5*23.4+11.1*57.6+6.54*28
2又4/5*23.4+11.1*57.6+6.54*28
2又4/5*23.4+11.1*57.6+6.54*28
2又4/5*23.4+11.1*57.6+6.54*28
=2.8*23.4+11.1*57.6+6.54*28
=28*2.34+11.1*57.6+6.54*28
=28*2.34+6.54*28+11.1*57.6
=28*(2.34+6.54)+11.1*57.6
=28*8.88+11.1*57.6
=2.8*11.1*8+11.1*57.6
=11.1*22.4+11.1*57.6
=11.1*(22.4+57.6)
=11.1*80
=888
2又4/5*23.4+11.1*57.6+6.54*28
=2.8*23.4+11.1*57.6+6.54*28
=28*2.34+11.1*57.6+6.54*28
=28*2.34+6.54*28+11.1*57.6
=28*(2.34+6.54)+11.1*57.6
=28*8.88+11.1*57.6
=2.8*11.1*8+11.1*57.6
=11.1*22.4+11.1*57.6
=11.1*(22.4+57.6)
=11.1*80
=888 额