а) -3x -1 = 0-3x = 1x = -1/3
в) 5x - 2 = 05x = 2x = 2/5
б) 2x + 7 = 52x = -2x = -1
г) 9 - 4x = 0-4x = -9x = 9/4
а) -3x -1 = 0
-3x = 1
x = -1/3
в) 5x - 2 = 0
5x = 2
x = 2/5
б) 2x + 7 = 5
2x = -2
x = -1
г) 9 - 4x = 0
-4x = -9
x = 9/4