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katusha53
@katusha53
December 2021
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Решите уравнение:
№ 1384 ( только четные : 2,4,6)
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Bear33
2.
х + 0,7 9
--------- = -----
2,6 2
(х + 0,7)*2 = 2,6 * 9
2х + 1,4 = 23,4
2х = 23,4 - 1,4
2х = 22
х = 11
4.
х + 0,4 13
--------- = -------
2,4 4
(х + 0,4)*4 = 2,4 * 13
4х + 1,6 = 31,2
4х = 31,2 - 1,6
4х = 29,6
х = 7,4
6.
х - 0,55 3
---------- = -----
6,25 5
(х - 0,55)*5 = 3 * 6,25
5х - 2,75 = 18,75
5х = 18,75 + 2,75
5х = 21,5
х = 4,3
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katusha53
а 6 ?
lenapanova
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Answers & Comments
х + 0,7 9
--------- = -----
2,6 2
(х + 0,7)*2 = 2,6 * 9
2х + 1,4 = 23,4
2х = 23,4 - 1,4
2х = 22
х = 11
4.
х + 0,4 13
--------- = -------
2,4 4
(х + 0,4)*4 = 2,4 * 13
4х + 1,6 = 31,2
4х = 31,2 - 1,6
4х = 29,6
х = 7,4
6.
х - 0,55 3
---------- = -----
6,25 5
(х - 0,55)*5 = 3 * 6,25
5х - 2,75 = 18,75
5х = 18,75 + 2,75
5х = 21,5
х = 4,3
Verified answer
Вот..................)