Răspunsuri

2014-04-12T19:13:39+03:00
2x + 3x + 3x -6x - x + 7x/4 = 3/4 -4/5 -1/2 + 2/5 + 3
x + 7x/4 = 3/4 -1/2 + 3 - 2/5
(4x + 7x ) / 4 = (15-8-10+60) / 20
11x / 4 = 57 /20
11 x * 20 = 57 *4
220 x = 228
x = 228 / 220
x = 114 / 110
x = 57 / 55