а) 6y = 5x - 1y = (5x - 1) / 6
б) 9/(xy) - 4 = 3x9/(xy) = 3x + 41/(xy) = (3x + 4) / 9xy = 9 / (3x + 4)y = (9 / (3x + 4)) / xy = 9 / (x * (3x + 4))
а) 6y = 5x - 1
y = (5x - 1) / 6
б) 9/(xy) - 4 = 3x
9/(xy) = 3x + 4
1/(xy) = (3x + 4) / 9
xy = 9 / (3x + 4)
y = (9 / (3x + 4)) / x
y = 9 / (x * (3x + 4))