Răspunsuri

2014-04-15T18:14:36+03:00
3x+2=25/100 *(x+15)
3x+2=1/4* (x+15)  
3x+2=x+15 /4    aducem la acelasi bumitor
12x+8=x+15
12x-x=15-8
11x=7
x=7/11
1 5 1