Ответ:\(63:9+(a-47)\cdot6=49\); \(7+6(a-47)=49\); \(6(a-47)=42\); \(a-47=7\); \(a=54\).\((14+7a):7=5\); \(14+7a=35\); \(7a=21\); \(a=3\).Ответ: 1) a = 54; 2) a = 3.