Question

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Answer 1

3.(x + 1) - 2.(x - 1) = - (x + 5)

3x + 3 - 2x + 2 = - x - 5

3x - 2x + x = - 5 - 3 - 2

x + x = - 10

2x = - 10

x = - 10 / 2 = - 5

4.(x + 1) = 12

4x + 4 = 12

4x = 12 - 4

4x = 8

x = 8 / 4 = 2

- 3.(x - 5) - 2.(2x + 1) = - 8

- 3x + 15 + 4x - 2 = - 8

- 3x + 4x = - 8 - 15 + 2

x = - 23 + 2 = - 21

3,5x + 8 = 2.(x + 7)

3,5x + 8 = 2x + 14

3,5x - 2x = 14 - 8

1,5x = 6

x = 6 / 1,5 = 4