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Sophiyya
@Sophiyya
July 2022
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решите уравнение 1 1/4 -(1/15+1/10+x)=3/4
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Oksana14011977
1 1/4 - (1/15 + 1/10 + х) = 3/4
5/4 - (2/30 + 3/30 + х) = 3/4
- (5/30 + х) = 3/4 - 5/4
- (5/30 + х) = - 2/4
5/30 + х = 2/4
1/6 + х = 1/2
х = 1/2 - 1/6
х = 3/6 - 1/6
х = 2/6
х = 1/3
проверка:
1 1/4 - (1/15 + 1/10 + 1/3) = 3/4
5/4 - (2/30 + 3/30 + 10/30) = 3/4
5/4 - 15/30 = 3/4
5/4 - 1/2 = 3/4
5/4 - 2/4 = 3/4
3/4 = 3/4
2 votes
Thanks 8
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Answers & Comments
5/4 - (2/30 + 3/30 + х) = 3/4
- (5/30 + х) = 3/4 - 5/4
- (5/30 + х) = - 2/4
5/30 + х = 2/4
1/6 + х = 1/2
х = 1/2 - 1/6
х = 3/6 - 1/6
х = 2/6
х = 1/3
проверка:
1 1/4 - (1/15 + 1/10 + 1/3) = 3/4
5/4 - (2/30 + 3/30 + 10/30) = 3/4
5/4 - 15/30 = 3/4
5/4 - 1/2 = 3/4
5/4 - 2/4 = 3/4
3/4 = 3/4