Question

Памогите 31 вариант​

Answer 1

Ответ:

Пошаговое объяснение:

1)

-4x - 11 = -5x - 12

5x - 4x = -12 + 11

x = -1

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2)

10x - 5 + x = 6

11x - 5 = 6

11x = 6 + 5

11x  11

x = 1

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3)

3x + 11 = 5x + 21x - 35

3x + 11 = 26x - 35

26x - 3x = 11 + 35

23x = 46

x = 46 : 23

x = 2

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4)

3x - 20x - 8 = 21x - 6

-17x - 8 = 21x - 6

-17x - 21x = -6 + 8

-38x = 2

x = 2 : (-38)

x = -1/19

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5)

17 - 6x + 10 - 20x + 5 = 6x

-26x + 32 = 6x

6x + 26x = 32

32x = 32

x = 1

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6)

-11x + 3x - 9 = -8x - 9

-8x - 9 = -8x - 9

-8x + 8x = -9 + 9

0 = 0

уравнение имеет множество корней