Răspuns :
Elimini parantezele
(2x - 1) - 2(3x-5) = 7
2x -1 -6x +10 = 7
-4x = 7 + 1 -10
- 4x = -2
x = (- 2)/ (-4)
x = 1/2
(2x - 1) - 2(3x-5) = 7
2x -1 -6x +10 = 7
-4x = 7 + 1 -10
- 4x = -2
x = (- 2)/ (-4)
x = 1/2