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oleg08091
@oleg08091
June 2022
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решить систему уравнений x= y-3, 2x-5y=-21
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SkaffOwl
X = y - 3
2x - 5 y = - 21
x = y - 3
2 (y - 3) - 5 y = - 21
2y - 6 - 5y = -21
- 3y = - 21 + 6
- 3y = - 15
y = 3
y = 3
x= 3 - 3
y = 3
x = 0
1 votes
Thanks 1
oleg08091
спасибо чел
SkaffOwl
чувак, там y = 5
SkaffOwl
x = 2
samodina
Решение во вложенном файле
1 votes
Thanks 1
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Answers & Comments
2x - 5 y = - 21
x = y - 3
2 (y - 3) - 5 y = - 21
2y - 6 - 5y = -21
- 3y = - 21 + 6
- 3y = - 15
y = 3
y = 3
x= 3 - 3
y = 3
x = 0