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genderbeat
@genderbeat
June 2023
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Какое из уравнений имеет корень, равный -1?
3x + 2 = – 5 – 3x
x + 2 = – 8 – 3x
6x = – 9 – 3x
– 0,2x + 1,9 = 1,7x
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evvoronina1
3x + 2 = – 5 – 3x
3х + 3х = -5 - 2
6х = -7
х = -7 : 6
х = -1 1/6
x + 2 = – 8 – 3x
х + 3х = -8 - 2
4х = -10
х = -10 : 4
х = - 2,5
6x = – 9 – 3x
6х + 3х = -9
9х = -9
х = -9 : 9
х = -1
ТОЛЬКО ЭТО УРАВНЕНИЕ ИММЕЕТ КОРЕНЬ -1.
– 0,2x + 1,9 = 1,7x
-0,2х - 1.7х = -1,9
-1,9х = -1,9
х = -1,9 : (-1,9)
х = 1
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Answers & Comments
3х + 3х = -5 - 2
6х = -7
х = -7 : 6
х = -1 1/6
x + 2 = – 8 – 3x
х + 3х = -8 - 2
4х = -10
х = -10 : 4
х = - 2,5
6x = – 9 – 3x
6х + 3х = -9
9х = -9
х = -9 : 9
х = -1
ТОЛЬКО ЭТО УРАВНЕНИЕ ИММЕЕТ КОРЕНЬ -1.
– 0,2x + 1,9 = 1,7x
-0,2х - 1.7х = -1,9
-1,9х = -1,9
х = -1,9 : (-1,9)
х = 1