решить дроби 3/4х-1,1/2+1/5х=1,2/3

3/4x - 1  1/2 + 1/5x = 1  2/33/4x + 1/5x = 1  2/3 + 1  1/215/20x + 4/20x = 1  4/6 + 1  3/619/20x = 2 7/619/20x = 19/6x = 19/6 : 19/20x = 19/6 * 20/19x = 1/3 * 10/1x = 10/3x = 3  1/3