-1.21 = -121/100 and reduces to: -1 21/100
21/99
Let P = 0,212121,,,, Hence 100P = 21.212121.... Subtract 99P = 21 (NB The repeating decimals subtract to zero. P = 21/99 Cancel down by '3' P = 7/33 The answer!!!!
matt
40/33
21/50 = 0.42
2 and 42/100 = 2 21/50 could also = 242/100=121/50
21/99
21% = 21/100 in fraction form.
It is 0.9130434782608695652173 with the underlined string repeating forever.
21% = 21/100
21/1000