Question

3分之1除以9分之4加3分之1成4分之1简便运算

Answer 1

3分之1除以9分之4加3分之1成4分之1
=1/3除以4/9+1/3*1/4
=1/3*9/4+1/3*1/4
=1/3(9/4+1/4)
=1/3*10/4
=1/3*5/2
=5/6