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
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