Răspunsuri

Cel mai inteligent răspuns!
2014-10-24T11:05:50+03:00
2/7(x+3)+x/2 = 12/14(x-4)
2x/7+6/7 + x/2 = 6/7(x-4)
2x/7 +6/7+x/2 = 6x/7-24/7
6x/7-2x/7-x/2=6/7+24/7
4x/7 -x/2 = 30/7    se inmulteste cu 14
8x-7x =60
x = 60