Odpowiedź:
(⅓ - 3,5) * (6i1/5 - 4,7) =
⅓ - 3,5 = ⅓ - 3i5/10 = ⅓ - 3½ = (-3i1/6)
6i1/5 - 4,7 = 6i1/5 - 4i7/10 = 6i2/10 - 4i7/10 = 1i5/10 = 1½
(-3i1/6) * 1½ = 19/6 * 3/2 = 57/12 = -4¾ (4,75)
