Tìm x
2.(x - 3) - 3 = 4.(3 + x) - 18
2x - 6 - 3 = 12 + 4x - 18
- 6 - 3 - 12 + 18 = 4x - 2x
-3=2x
\(\frac{-3}{2}\)=x
Vậy x=\(-\frac{3}{2}\)
125 - 39 x + 3 = 65
39 x + 3 = 125 - 65
39 x + 3 = 60
39 x = 60 - 3
39 x = 57
x = \(\frac{19}{13}\)
Vậy x=\(\frac{19}{13}\)