Question

Линейные уравнения математика 7 класс 20 баллов

Answer 1

Ответ:

2) 5x=10

x=2

3) 3-7-25=9x-x

x= -3,625

4) 4x=16

x=4

5) -5+7x= -47

x= -6

Answer 2

Ответ:

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2. 3x + 2 + 2x = 12

3x + 2x = 12 - 2

5x = 10

x = 10/5

x = 2

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3. 3 + x - 7 = 9x + 25

3 - 7 - 25 = 9x - x

-29 = 8x

8x = -29

x = -29/8

x = -3 5/8

x = -3,625

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4. 3x - 4 = 13 - x - 1

3x + x = 13 - 1 + 4

4x = 16

x = 16/4

x = 4

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5. 4x - 5 + 3x = 3 - 50

-5 + 7x = -47

7x = -47 + 5

7x = -42

x = -42/7

x = -6

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