Write the following as rational numbers in their standard forms:
(a) 35%
(b) 1.2
(c) -6 3/7
(d) 240 ÷ (-840)
(e) 115 ÷ 207
(a) 7/20
(b) 6/5
(c) -45/7
(d) -2/7
(e) 5/9
Convert % to fraction, decimals to fraction, mixed numbers to improper fractions, simplify divisions.