Question

ребят помогите по братски математика)​

Answer 1

Ответ:

Пошаговое объяснение:

2x = 18 - x

2x + x = 18

3x = 18

x = 18:3

x = 6

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7x + 3 = 30 - 2x

7x + 2x = 30 - 3

9x = 27

x = 27 : 9

x = 3

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7 - 2x = 3x - 18

3x + 2x = 7 + 18

5x = 25

x = 25:5

x = 5

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0,2x + 2,7 = 1,4 - 1,1x

0,2x + 1,1x = 1,4 - 2,7

1,3x = -1,3

x = -1

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5,4 - 1,5x = 0,3x - 3,6

0,3x + 1,5x = 5,4 + 3,6

1,8x = 9

x = 9:1,8

x = 5

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(3/8)x + 15 = (1/6)x + 10

9x + 360 = 4x + 240

9x - 4x = 240 - 360

5x = -120

x = -120:5

x = -24

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