Х – 8 = 20 Х = ____ Х = ____ 60 – у = 21 у = ____ у = ____ с + 20 = 73 с = ____ с = ____ 38 + a = 50 a = ____ a = ____ 34 - b = 30 b = ____ b = ____

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?