Ответ:

Пошаговое объяснение:

7x + 35 = 0

7x = -35

x = -35 : 7

x = -5

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4x + 7 = 0

4x = -7

x = -7 : 4

x = -1,75

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-5x + 12 = 0

5x = 12

x = 12 : 5

x = 2,4

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2x + 1 = -6x

2x + 6x = -1

8x = -1

x = -1 : 8

x = -0,125

=======

10 + 5x = 2 + 4x

5x - 4x = 2 - 10

x = -8

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6 - 2x = 4x - 30

4x + 2x = 6 + 30

6x = 36

x = 36 : 6

x = 6

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4(x - 2) = -x

4x - 8 = -x

4x + x = 8

5x = 8

x = 8 : 5

x = 1,6

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5(2 - 5x) = 6(-5x + 8)

10 - 25x = -30x + 48

30x - 25x = 48 - 10

5x = 38

x = 38 : 5

x = 7,6

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2(-1- x) = 2x + 7

-2 - 2x = 2x + 7

2x + 2x = -2 - 7

4x = -9

x = -9 : 4

x = -2,25

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-9x + 10 = -x

9x - x = 10

8x = 10

x = 10 : 8

x = 1,25

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40 - 5x = -10 + 3x

3x + 5x = 40 + 10

8x = 50

x = 50 : 8

x = 6,25

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-4(5 - 4x) = x + 1

-20 + 16x = x + 1

16x - x = 1 + 20

15x = 21

x = 21 : 15

x = 1,4

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-(4x - 8) = -3(x - 10)

-4x + 8 = -3x + 30

-4x + 3x = 30 - 8

-x = 22

x = -22

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10x + 1 = 6x

10x - 6x = -1

4x = -1

x = -1 : 4

x = -0,25

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6(-4x - 2) = 2x + 66

-24x - 12 = 2x + 66

2x + 24x = -12 - 66

26x = -78

x = -78 : 26

x = -3

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-3(4x - 5) = -6x + 51

-12x + 15 = -6x + 51

12x - 6x = 15 - 51

6x = -36

x = -36 : 6

x = -6

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12 - (8x + 14) = 22

12 - 8x - 14 = 22

-2 - 8x = 22

-8x = 22 + 2

-8x = 24

x = -24 : 8

x = -3

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5(4x - 11) = -(-10x - 62)

20x - 55 = 10x + 62

20x - 10x = 62 + 55

10x = 117

x = 117 : 10

x = 11,7