4又3/4-3.125+(5.25-2又3/8) 简算

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4又3/4-3.125+(5.25-2又3/8) 简算

4又3/4-3.125+(5.25-2又3/8)
=(4.75+5.25)-(3.125+2.375)
=10-5.5
=4.5

4又3/4-3.125+(5.25-2又3/8)
=4.75-3.125+5.25-2.375
=(4.75+5.25)-(3.125+2.375)
=10-5.5
=4.5