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КотэАбрикосович
@КотэАбрикосович
July 2022
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svetycik70
Х-3/5х-0,8х=405х-3х-4х=200-2х=200х=-100
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Thanks 1
khrus2014
Х - 3/5х - 0,8х = 40
2/5х - 0,8х = 40
0,4х -0,8х = 40
- 0,4х = 40
х = 40 / -0,4
х = - 100
Проверка:
-100 - 3/5*(-100) - 0,8 * (-100) = 40
-100 - (-60) - (-80) = 40
-40 - ( -80) = 40
40=40
0 votes
Thanks 0
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Answers & Comments
2/5х - 0,8х = 40
0,4х -0,8х = 40
- 0,4х = 40
х = 40 / -0,4
х = - 100
Проверка:
-100 - 3/5*(-100) - 0,8 * (-100) = 40
-100 - (-60) - (-80) = 40
-40 - ( -80) = 40
40=40