Răspunsuri

2014-11-12T15:57:37+02:00
5x-25=6-4x-4
5x+4x=25+6-4
9x=27
x=27:9
x=3
2014-11-12T15:59:11+02:00
5(x-5)=2(3-2x)-4. 5x-25=6-4x-4. 5x+4x=6-4+25. 9x=27. x=27/9. x=3