Question

51又3分之2÷3分之5+71又4分之3÷4分之7+91又5分之4÷5分之9

Answer 1

=三分之一百五十五×五分之三+四分之二百八十五×七分之四+五分之四百五十九×九分之五
=31+41+51
=123

Answer 2

51又3分之2÷3分之五+71又4分之3÷4分之七+91又5分之4÷5分之九
=（51+2/3）÷5/3+（71+3/4）÷7/4+（91+4/5）÷9/5
=51X3/5+2/3X3/5+71X4/7+3/4X4/7+91X5/9+4/5X5/9
=153/5+2/5+284/7+3/7+455/9+4/9
=30+3/5+2/5+40+4/7+3/7+50+5/9+4/9
=30+40+50+1+1+1+
=123

Answer 3

51又3分之2÷3分之5+71又4分之3÷4分之7+91又5分之4÷5分之9
=155/3x3/5+287/4x4/7+459/4x5/9
=31+41+51
=123

Answer 4

原式=155/3÷5/3+287/4÷7/4+459/5÷9/5
=155/3×3/5+287/4×4/7+459×5/9
=31+41+51
=123

Answer 5

51又3分之2÷3分之五+71又4分之3÷4分之七+91又5分之4÷5分之九
=31+41+51
=123