Question

64. Запишите в виде разности произведения: 1) 9 (21-8); 3) (4029) 12; 5) 8 (193); 2) 31 (259); 4) (51 15) 19; 6) (623) 6. -​

Answer 1

Ответ:

1) 9(21-8) = 9*21 - 9*8 = 189 - 72 = 117

2) 31(259) = 31*260 - 31 = 8069 - 31 = 8038

3) (4029)12 = 4029*10*2 - 4029*2 = 80580 - 8058 = 72522

4) (51 15)19 = 5115*20 - 5115 = 102300 - 5115 = 97215

5) 8(193) = 8(200-7) = 8*200 - 8*7 = 1600 - 56 = 1544

6) (623)6 = 623*(10-4) = 6230 - 2492 = 3738