Răspunsuri

2014-04-22T22:14:18+03:00
X- numar
30x/100=x/5+1.42
3x/10=x/5+1.42. Aducem la ac numitor

3x=2x+14.2
3x-2x=14.2
x=14.2
2014-04-22T22:37:35+03:00
X- numar
30x/100=x/5+1,42
3x/10=x/5+1,42. 

3x=2x+14,2
3x-2x=14,2
x=14,2