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sasalajf0134
@sasalajf0134
August 2022
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Решите задачу и пример.
Вот пример ...
[tex] \frac{51}{25} \div ( \frac{8}{25} + \frac{9}{20} ) - \frac{64}{35} \times \frac{5}{4} [/tex]
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jekadva
1) 8/25 + 9/20 = 32/100 + 45/100 = 77/100
2) 51/25 : 77/100 = 51/25 * 100/77 = 204/77
3) 64/35 * 5/4 = 16/7
4) 204/77 - 16/7 = 204/77 - 176/77 = 28/77 = 4/11
ответ: 4/11
============================
2/5 + 2/7 + 1/4 = (56+40+35)/140 = 131/140часть
1 - 131/140 = 9/140часть команды налицо
27 : 9/140 = 27 * 140/9 = 3*140 = 420человек команда корабля
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Answers & Comments
2) 51/25 : 77/100 = 51/25 * 100/77 = 204/77
3) 64/35 * 5/4 = 16/7
4) 204/77 - 16/7 = 204/77 - 176/77 = 28/77 = 4/11
ответ: 4/11
============================
2/5 + 2/7 + 1/4 = (56+40+35)/140 = 131/140часть
1 - 131/140 = 9/140часть команды налицо
27 : 9/140 = 27 * 140/9 = 3*140 = 420человек команда корабля