Răspunsuri

2014-11-16T10:00:52+02:00
3x +3 + 2x +4=4x+10 rez ca 5x +7= 4X+10 rez ca x= 10-7=3
2014-11-16T10:02:24+02:00
3*(x+1) + 2*(x+2) = 4*x + 10
3x + 3 + 2x + 4 = 4x + 10
5x + 7 = 4x + 10
5x - 4x = 10 - 7
x = 3