Question

(7-2 5/16)×4/25 3 3/4×2/5-3 6/25×5/27

Answer 1

(7 - 2 5/16) * 4/25 = 4 11/16 * 4/25 = 75/16 * 4/25 = 3/4
3 3/4 * 2/5 - 3 6/25 * 5/27 = 15/4 * 2/5 - 81/25 * 5/27 = 3/2 - 3/5 = (15-6)/10 = 9/10 = 0,9