Răspuns :
2x/7-1/2=x
2x/7-1=2x
2x/7=2x+1
2x=14x+7
-7=12x
x=-12/7
7-x/2-2x/3=0
7-x/2-2x=0
7-x/2=2x
7-x=4x
7=5x
x=7/5
Răspuns:
[tex] \frac{2 \times }{7} - \frac{1}{2} = x \\ 4x - 7 = 14x \\ 4x - 14x = 7 \\ - 10x = 7 \\ x = - \frac{7}{10} \\ x = - 0.7 \\ b) \\ 7 - \frac{x}{2} - \frac{2x}{3} = \\ 7 - \frac{7}{6} x[/tex]
b) e posibil sa nu fie bun dar a) este bun.Coroana?