Help!!! ＋ – x 除 分
10. (–5)–(–5分之2)
11.(–16)x(–4分之3)
12.(–6分1之)x(–2分之3)
13.(–40)除(–7分之4)
14(–8分之5)除(＋8又4分之3)
I want (＋5)＋(–7)
=XX+xx
=xx
更新1:
want (＋xx)＋(–xx) =XX+xx =xx
