Решим уравнения:
x + 287 = 486
x = 486 - 287
x = 199
x : 11 = 22033
x = 22033 * 11
x = 242363
403 - x = 265
x = 403 - 265
x = 138
725 : x = 29
x = 725 : 29
x = 25
x - 288 = 513
x = 513 + 288
x = 801
47 * x = 4700
x = 4700 : 47
x = 100
Ответ: x = 199; x = 242363; x = 138; x = 25; x = 801; x = 100