Răspunsuri

2014-05-23T22:05:25+03:00
3(2x+1)=6x7
6x+3=42
6x=42-3
6x=39
x=39:6
x=6.5

2014-05-23T22:05:52+03:00
2x+1/6=7/3 inmultim pe diagonala si rezulta:
 3(2x+1)=7·6
6x+3=42
6x=42-3
6x=39
x=39:6
=6,5