Răspunsuri

2014-11-19T12:27:46+02:00
X+1/4=15x/10  numitor comun 20
20x+5=30x
5=30x-20x
5=10x
x=5/10
x=1/2
x=0.5
2014-11-19T12:42:43+02:00
x + 1x
   4       2
x + 1 = 6x
- 6x + x = - 1
5x = 1
x = 1/5
x = 0,2
3 3 3