State, true or false: (i) 7/9 = 7 + 5/9 + 5 (ii) 7/9 = 7 - 5/9 - 5 (iii) 7/9 = 7 x 5/9 x 5 (iv) 7/9 = 7 ÷ 5/9 ÷ 5 (v) -5/-12 is a negative rational number. (vi) -13/25 is smaller than -25/13