Răspunsuri

2014-03-31T22:25:31+03:00

( x - 12,7 ) x 4 + 2,356 = 3,556

4x - 50,8 + 2,356 = 3,556

4x = 3,556 + 50,8 - 2,356

4x = 52

x = 13