Răspunsuri

2014-08-28T13:47:12+03:00
Aducem la acelais numitor

x+4 +4x -14 =6 + 12x -9x

5x -10= 3x +6

5x-3x=6+10

2x=16

x=8
2014-08-28T13:47:43+03:00
.....aducem la numitor comun 6 
x+4 + 4x-14=6+ 12x-9x 
x+4x-12x+9x=6-4+14
2x= 16
x= 16:2
x=8