請例算式和步驟
更新1:
前面應該係The monthly
更新2:
正確的是 The monthly salary of Brcky in June was $20 340.It included a bonussalary and a commissionn of 2/25 of her basic salary .What was her salary?
更新3:
其實我知道條式係 p+ p/20 + 2/25p = 20 340 但唔識計
更新4:
今年F.1,單元是關於方程式