Краткое пояснение: Решаем уравнения, чтобы найти значение переменной 'а'.
- 7 ⋅ 7 - (7 ⋅ 9 - 19) + a ⋅ 4 = 29
- 49 - (63 - 19) + a ⋅ 4 = 29
- 49 - 44 + a ⋅ 4 = 29
- 5 + a ⋅ 4 = 29
- a ⋅ 4 = 29 - 5
- a ⋅ 4 = 24
- a = 24 : 4
- a = 6
- (8 ⋅ 7 - 63 : 9) : a = 55 - 6 ⋅ 8
- (56 - 7) : a = 55 - 48
- 49 : a = 7
- a = 49 : 7
- a = 7