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2(x-3)+7(2x-1)=19-4(x+2)

Răspuns :

2(x - 3) + 7(2x - 1) = 19 - 4(x +2)

2x - 6 + 14x - 7 = 19 - 4x - 8

16x - 13 = 11 - 4x

16x + 4x = 11 + 13

20x = 24

x = 24/20

x = 6/5

[tex] \it 2 \cdot (x - 3) + 7(2x - 1) = 19 - 4(x + 2) = = > \\ \it 2x - 6 + 14x - 7 = 19 - 4x - 8 = = > \\ \it 2x + 14x - 6 - 7 = 19 - 4x - 8 = = > \\ \it 16x - 13 = 19 - 4x - 8 = = > \\ \it 16x + 4x = 13 + 19 - 8 = = > \\ \it 20x = 32 - 8 = = > \\ \it 20x = 24 = = > \\ \it x = \frac{24}{20}^{(4} = = > x = \it \frac{6}{5} \\ \\ [/tex]