(4分之3-7分之5)÷56分之1
=3/4÷1/56-5/7÷1/56
=3/4x56-5/7x56
=42-40
=2
(35分之16+14分之13)÷14分之13
=16/35x14/13+13/14x14/13
=16/5x2/13+1
=32/65+1
=1又32/65
25分之8乘4分之3乘6分之5
=(8x3x5)/(25x4x6)
=(8x3)/(4x6)x5/25
=1x1/5
=1/5
15分之2乘6分之1+6分之5乘15分之2
=2/15x(1/6+5/6)
=2/15x1
=2/15
7分之5乘5乘5分之14
=5/7x(5x14/5)
=5/7x14
=5x2
=10