2 * (100 + х) = 400
100 + х = 400 : 2
100 + х = 200
х = 200 - 100
х = 100
проверка:
2 * (100 + 100) = 400
2 * 200 = 400
400 = 400
200 + (b + 400) = 1 000
b + 400 = 1 000 - 200
b + 400 = 800
b = 800 - 400
b = 400
проверка:
200 + (400 + 400) = 1 000
200 + 800 = 1 000
1 000 = 1 000
700 : у - 2 = 5
700 : у = 5 + 2
700 : у = 7
у = 700 : 7
у = 100
проверка:
700 : 100 - 2 = 5
7 - 2 = 5
5 = 5
(800 + х) - 300 = 600
800 + х = 600 + 300
800 + х = 900
х = 900 - 800
х = 100
проверка:
(800 + 100) - 300 = 600
900 - 300 = 600
600 = 600
Надеюсь :)
Пошаговое объяснение:
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1905 = 3 × 5 × 127
Как видно из разложения: НОД(189; 1905) = 3 => числа НЕ взаимно простые.
(Может в условии ошибка?)