Răspunsuri

2014-02-13T19:08:40+02:00
2014-02-13T19:17:47+02:00
5+2 ( 2x+1 ) = 5 (x-1) =>2 ( 2x + 1 ) si 5 ( x - 1) =>
4x+1 = 5x-5
4x-5x=-1-5
-x= 6
esti sigur ca
esti sigur ca 2(2x+1)=4x+1---?
help,please http://brainly.ro/tema/16130