2x - 3 - (5x - 4) = 2x - 3 - 5x + 4 = -3x + 1
3x - 5 - (7x - 3) = 3x - 5 - 7x + 3 = -4x - 2
5x - 6 - (8x - 7) = 5x - 6 - 8x + 7 = -3x + 1
4x - 7 - (6x - 8) = 4x - 7 - 6x + 8 = -2x + 1
2x - 3 - (5x - 4) = 2x - 3 - 5x + 4 = -3x + 1
3x - 5 - (7x - 3) = 3x - 5 - 7x + 3 = -4x - 2
5x - 6 - (8x - 7) = 5x - 6 - 8x + 7 = -3x + 1
4x - 7 - (6x - 8) = 4x - 7 - 6x + 8 = -2x + 1