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volk3280
@volk3280
July 2022
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Решите пж с пояснением. 4/5-2/15,3/14+5/21,3целых 1/4+2целых 2/3,2целых 1/6-5целых 2/15,11целых_(3/7+2целых 5/14)
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1aszx12
4/5 - 2/15 = 12/15 - 2/15 =10/15 = 2/3;
3/14 + 5/21 =9/42 + 10/42 =19/42;
3ц1/4 +2ц2/3 = 3ц3/12 + 2ц8/12 = 5ц11/12;
2ц1/6 - 5ц2/15 =2ц5/30 -5ц4/30 =-2ц29/30;
11ц-(3/7+2ц5/14)=11ц-(6/14+2ц5/14)=11ц-2ц11/14 = 8ц3/14;
вот и все просто приводишь дробь к общему знаменателю)
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Answers & Comments
3/14 + 5/21 =9/42 + 10/42 =19/42;
3ц1/4 +2ц2/3 = 3ц3/12 + 2ц8/12 = 5ц11/12;
2ц1/6 - 5ц2/15 =2ц5/30 -5ц4/30 =-2ц29/30;
11ц-(3/7+2ц5/14)=11ц-(6/14+2ц5/14)=11ц-2ц11/14 = 8ц3/14;
вот и все просто приводишь дробь к общему знаменателю)