1) (7^6 * 2^6)/14^5 * 28^-1 + 2^3/16 = 14^6/14^5 * 1/28 + 8/16 = 14/28 + 1/2 = 1/2 + 1/2 = 1
2)(23^2 - 13^2)/4*3^2 = (23 - 13)(23 + 13)/4*9 = 10 * 36/36 = 10
3) (96^2 - 54^2)/(83^2 - 67^2) = (96 - 54)(96 + 54)/(83 - 67)(83 + 67) = 42*150/16*150 = 42/16 = 21/8 = 2.625