Question

Помогите срочно!!! Математика​

Answer 1

Ответ:

Пошаговое объяснение:

-5 + x = 117

x = 117 + 5

x = 122

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-92 - x = -15

-x = 92 - 15

-x = 77

x = -77

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x - 5 = -17

x = -17 + 5

x = -12

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3x = -15

x = -15 : 3

x = -5

==================

5x - 5 = 11 - 3x

5x + 3x = 11 + 5

8x = 16

x = 16 : 8

x = 2

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(2a + 2) - (2 + 3a) = 6a + 7

2a + 2 - 2 - 3a = 6a + 7

-a = 6a + 7

6a + a = -7

7a = 7

a = -1

=====================

12y + 3(y - 15) = -90

12y + 3y - 45 = -90

15y - 45 = -90

15y = -90+45

15y = -45

y = -45:15

y = -3

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3(x - 4) = -9

x - 4 = -9:3

x - 4 = -3

x = 4 - 3

x = 1

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2(7 - x) - 8(x - 4) = 36

14 - 2x - 8x + 32 = 36

46 - 10x = 36

10x = 46 - 36

10x = 10

x = 1

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