简便运算,3-5/8÷25/28-3/10…二、4/5×[13/16÷(3/4+1/3)]

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简便运算,3-5/8÷25/28-3/10…二、4/5×[13/16÷(3/4+1/3)]

简便运算,3-5/8÷25/28-3/10…二、4/5×[13/16÷(3/4+1/3)]
简便运算,
3-5/8÷25/28-3/10…二、4/5×[13/16÷(3/4+1/3)]

简便运算,3-5/8÷25/28-3/10…二、4/5×[13/16÷(3/4+1/3)]
3-5/8÷25/28-3/10
=3-7/10-3/10
=3-(7/10+3/10)
=3-1
=2
4/5×[13/16÷(3/4+1/3)]
=4/5×[13/16÷13/12]
=4/5×[13/16×12/13]
=4/5×3/4
=3/5