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elshad20031
@elshad20031
June 2022
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решите пожалуйста систему уравнений x-2y=5 4x+y=2
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ShirokovP
Verified answer
x - 2y = 5
4x + y = 2
x = 2y + 5
4(2y + 5) + y - 2 = 0
x = 2y + 5
8y + 20 + y - 2 = 0
x = 2y + 5
9y + 18 = 0
x = 2y + 5
9y = - 18
x = 2*(-2) + 5 = 5 - 4 = 1
y = - 2
Ответ
( 1; - 2)
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Answers & Comments
Verified answer
x - 2y = 54x + y = 2
x = 2y + 5
4(2y + 5) + y - 2 = 0
x = 2y + 5
8y + 20 + y - 2 = 0
x = 2y + 5
9y + 18 = 0
x = 2y + 5
9y = - 18
x = 2*(-2) + 5 = 5 - 4 = 1
y = - 2
Ответ
( 1; - 2)