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Vika4443
@Vika4443
July 2022
2
15
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Система уравнений
у=7х-15
у+1=-6х+12
Помогите решить
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ShirokovP
Verified answer
Y = 7x - 15
7x - 15 + 1 + 6x - 12 = 0
y = 7x - 15
13x - 26 = 0
x = 2
y = 7*2 - 15 = 14 - 15 = - 1
( 2; - 1)
3 votes
Thanks 3
93931
Y = 7x-15
y+1 = -6x+12
y-7x = -15
y+6x = 12-1
_ y-7x = -15
y+6x = 11
-13x = -26
x =
2
y+6*2 = 11
y+12 = 11
y = 11-12
y =
-1
Ответ : х = -1 ; у = 2.
5 votes
Thanks 3
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Answers & Comments
Verified answer
Y = 7x - 157x - 15 + 1 + 6x - 12 = 0
y = 7x - 15
13x - 26 = 0
x = 2
y = 7*2 - 15 = 14 - 15 = - 1
( 2; - 1)
y+1 = -6x+12
y-7x = -15
y+6x = 12-1
_ y-7x = -15
y+6x = 11
-13x = -26
x = 2
y+6*2 = 11
y+12 = 11
y = 11-12
y = -1
Ответ : х = -1 ; у = 2.