[4-（3/4-3/8)]*4/29
=16/29-3/29+3/58
=15/29+3/58
=30/58+3/58
=33/58这是简算的吗?[4-（3/4-3/8)]*4/29=16/29-(6/8-3/8)*4/29=16/29-3/8*4/29=32/58-3/58=29/58=1/2