Предмет:
МатематикаАвтор:
анонимЧтобы привести дробь к общему знаменателю, необходимо и числитель и знаменатель обеих дробей умножить на некое число, чтобы в знаменателе обеих дробей получилось нужное число:
а) 3/50 и 7/25, общий знаменатель 50:
7/25 = 7 * 2 / 25 * 2 = 14/50;
3/50 и 14/50;
б) 7/200 и 11/40, общий знаменатель - 200:
11/40 = 11 * 5 / 40 * 5 = 55/200;
7/200 и 55/200;
в) 8/17 и 9/34, общий знаменатель - 34:
8/17 = 8 * 2 / 17 * 2 = 16/34;
16/34 и 9/34.
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1 Underline the correct tense.
1 At noon yesterday, the staft were having/are having their monthly meeting.
2 My father works/used to work as a laxi driver five years ago.
3 Did you arrive/Were you arriving at the airport on time?
4 Two hundred years ago, people travelled/had travelled abroad by ship.
5 The teacher was giving/gave the students a test when the principal came/was coming into the classroom.
6 Did your grandfather use to went/go birdwatching when he was a young man?
7 Nico e is ciosing/closed the windows, sets/set the alarm and left/was leaving the house.
8 I walked was walking on the beach in Bali this time last woek/
9 Did Arnold attend/Was Arnold attending the conference yesterday?
10 Amy was sitting/sat on the park bench while the children play/were playing.
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Английский языкАвтор:
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