4/5-(3/8-1/5)简便运算

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4/5-(3/8-1/5)简便运算4/5-(3/8-1/5)简便运算4/5-(3/8-1/5)简便运算4/5-(3/8-1/5)=(4/5+1/5)-3/8=1-3/8=5/84/5-(3/8-1/5

4/5-(3/8-1/5)简便运算
4/5-(3/8-1/5)简便运算

4/5-(3/8-1/5)简便运算
4/5-(3/8-1/5)
=(4/5+1/5)-3/8
=1-3/8
=5/8

4/5-(3/8-1/5)
=4/5-3/8+1/5
=4/5+1/5-3/8
=5/5-3/8
=1-3/8
=5/8