5分之1÷4+5分之4乘4分之1
=(1/5+4/5)×1/4
=1×1/4
=1/4
8分之5+4分之3+8分之3+4分之1
=(3/8+5/8)+(3/4+1/4)
=1+1
=2
7分之4乘6+7分之4
=(6+1)×4/7
=7×4/7
=4
(6分之5-2分之1)乘5分之6
=1/3×6/5
=2/5
(4分之3+6分之5)÷12分之5
=19/12÷5/12
=3.8
3-26分之9÷13分之6-4分之1
=3-3/4-1/4
=3-(3/4+1/4)
=3-1
=2
5分之1÷4+5分之4乘4分之1
=(1/5+4/5)×1/4
=1×1/4
=1/4
8分之5+4分之3+8分之3+4分之1
=(3/8+5/8)+(3/4+1/4)
=1+1
=2
7分之4乘6+7分之4
=(6+1)×4/7
=7×4/7
=4
(6分之5-2分之1)乘5分之6
=1/3×6/5
=2/5
(4分之3+6分之5)÷12分之5
=19/12÷5/12
=3.8
3-26分之9÷13分之6-4分之1
=3-3/4-1/4
=3-(3/4+1/4)
=3-1
=2