44,62:(7,8+0,5х)+26,51=31,11
44,62 /(7,8 + 0,5х) + 26,51 = 31,11 44,62 + 26,51 * (7,8 + 0,5х) = 31,11 *(7,8 + 0,5х) 44,62 + 206,778 + 13,255х = 242,658 + 15,555х 13,255х - 15,555х = 242,658 - 206,778 - 44,62 - 2,3х = -,8,74 х = -8,74 / - 2,3 х = 3,8