Question

十除以括号内1/2减括号内附一加4/3括住乘以括号内-6

Answer 1

2分之5乘m
=15/2
括号内2分之3乘m减1括住
=9/2-1
3括号内4减m括住
=3
综上
15/2-（9/2-1）+3=7