(-5X-13加7)3=24,手机不好输入符号,望采纳。
(7+(-5)*(-13))/3=24
((-5*-13)+7)/3(7+(-5*-13))/3(7+(-13*-5))/3((-13*-5)+7)/3
[(-5)×(-13)+7]÷3=24
(-5)*(-13)=6565+7=7272/3=24不客气