what is twelve minus nine?什麽意思

what is twelve minus nine?什麽意思 What's twwnty minus twelve?的汉语意思 twelve minus five is seven what's thirty-six minus twelve What's twelve minus two?下一句用英文该怎么回答? What's nine minus four?下一句用英文怎么回答 what time is it now?A half to nine B twelve past forty C thi twenty minus twelve Nine ___________(twelve) is three quarters. eight minus thirt-nine minus,thirteen,is,fifteen,what组句 What's twelve minus two?It's eight.哪里错了?