Ответ(ы) на вопрос:
Гость
На первом 10 и 11, на втором 12. Вроде, все норм:D
Гость
№10
2 5 2 3
1) 1 - --- = --- - --- = ---
5 5 5 5
1 4 1 3
2) 3 - --- = 2 --- - --- = 2 ---
4 4 4 4
5 7 5 2
3) 3 - 1 --- = 2 --- - 1 --- = 1 ---
7 7 7 7
1 2 3 1 2 4 2 2
4) 26 --- - 19 --- = ( 25 --- + --- ) - 19 --- = 25 --- - 19 --- = 6 ---
3 3 3 3 3 3 3 3
5 7 11 5 7 16 7 9
5) 4 --- - 3 --- = ( 3 --- + --- ) - 3 --- = 3 --- - 3 --- = ----
11 11 11 11 11 11 11 11
13 13
6) 5 ---- - 3 ---- = 2
19 19
№11
2 3 1
1) ( x - 1 --- ) + 3 --- = 5 ---
5 5 5
2 1 3
x - 1 --- = 5 --- - 3 ---
5 5 5
2 2
x - 1 --- = 1 ---
5 5
2 2
x = 1 --- + 1 ---
5 5
4
x = 2 ---
5
4
Ответ: x = 2 ----
5
2 3 11
2) ( 3 --- + x ) - 2 --- = 2 ---
13 13 13
2 11 3
3 --- + x = 2 --- + 2 ---
13 13 13
2 1
3 --- + x = 5 ---
13 13
1 2
x = 5 --- - 3 ---
13 13
11
x = 1 ---
13
11
Ответ: x = 1 ---
13
№12
1 2 5 1 2 6 2 4
1) 2 --- - --- = ( 1 --- + --- ) - --- = 1 --- - --- = 1 --- (ч) - на вторую часть пути.
5 5 5 5 5 5 5 5
1 4 5
2) 2 --- + 1 --- = 3 --- = 4 (ч) - на весь путь.
5 5 5
Ответ:4 часа понадобилось велосипедисту на преодоление всего пути.
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