Răspunsuri

2014-09-11T16:27:58+03:00
  4x+3= 2x -2 (3 - x )
4x_+3=2x-6+2x
4x-2x-2x=-6-3
x=-9
  
 x - 5 (1-x ) +7 =  (3x +1) 
x-5+5x+7=3x+1
6x-5+7=3x+1
6x-3x=5-7+1
3x=-2+1
3x=-1
x=-1/3
 3(x-1) +2 = 5x -  2  (2 -3 x ) 
3x-3+2=5x-4+6x
3x-5x-6x=-4+3-2
-8x=-1-2
-8x=-3
x=3/8