Odpowiedzi

2010-01-14T18:34:14+01:00
2 i 1/5 = 11/5
0,3 = 3/10
-5 = -5

11/5 * 3/10 * -(5) =
= - (11*3*5) / (5*10) =
= - (11*3) / 10 = - 33 / 10 = -3,3
2010-01-14T18:44:32+01:00

2⅕ = 2,2
2,2×0,3 = 0,66
0,66 × {₋5} = ₋3,3
₋3,3 ₋ 6 = ₋9,3