Odpowiedź:
a) 4/3x + 5/8x = ( 4/3 + 5/8)x = ( 32/24 + 15/24)x = 47/24x = 1 23/24x
b) 1,2x + 2/3x = (1,2 + 2/3)x = (1 1/5 + 2/3)x = (6/5 +2/3)x = (18/15 + 10/15)x = 28/15x = 1 13/15x
c) 1/4x + 5/6x - 1/2x = (1/4 + 5/6 - 1/2)x = ( 3/12 + 10/12 -6/12)x = 7/12x
d)3/7x - 0,2x + x = ( 3/7 - 0,2 + 1)x = (3/7 - 2/10 + 1)x = ( 30/70 - 14/70 + 70/70)x = 86/70x = 1 16/70x = 1 8/35x
