b)20 * (16 i 3/8 - 5 i 3/5) = 20 * (16 i 15/40 - 5 i 24/40) = 20 * (15 i 55/40 - 5 i 24/40) = 20 * 10 i 31/40 = 20/1 * 431/40 = 8620/40 = 215 i 20/40 = 215 i 5/10
c)16 i 3/4 - 5 i 2/3 * 1/2 =16 i 3/4 - 17/3 * 1/2 = 16 i 3/4 - 17/6 = 16 i 3/4 - 2 i 5/6 = 16 i 9/12 - 2 i 10/12 = 15 i 21/12 - 2 i 10/12 = 13 i 11/12
... reszty nie dam rady podać. Sorry :(
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b)20 * (16 i 3/8 - 5 i 3/5) = 20 * (16 i 15/40 - 5 i 24/40) = 20 * (15 i 55/40 - 5 i 24/40) = 20 * 10 i 31/40 = 20/1 * 431/40 = 8620/40 = 215 i 20/40 = 215 i 5/10
c)16 i 3/4 - 5 i 2/3 * 1/2 =16 i 3/4 - 17/3 * 1/2 = 16 i 3/4 - 17/6 = 16 i 3/4 - 2 i 5/6 = 16 i 9/12 - 2 i 10/12 = 15 i 21/12 - 2 i 10/12 = 13 i 11/12
... reszty nie dam rady podać. Sorry :(