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1-3 × (x + 1) = 2 × (x + 6 )​

Răspuns :

1 - 3 × (x + 1) = 2 × (x + 6)

1 - 3x - 3 = 2x + 12

- 2 - 3x = 2x + 12

- 3x - 2x = 2x + 12

- 5x = 14

x = - 14/5