Вычеслить: (48+36):2=48:2+36:2= (16+20):4= (840-488):4= (50+120):5= (963-690):3= (484+426):2= (990+99):9= Какую цифру нужно

1. (48 + 36) / 2 = 48/2 + 36/2 = 24 + 18 = 42;

(16 + 20) / 4 = 16/4 + 20/4 = 4 + 5 = 9;

(840 - 488) / 4 = 840/4 - 488/4 = 420 - 244 = 176;

(50 + 120) / 5 = 50/5 + 120/5 = 10 + 24 = 34;

(963 - 690) / 3 = 963/3 - 690/3 = 321 - 230 = 91;

(484 + 426) / 2 = 484/2 + 426/2 = 242 + 213 = 455;

(990 + 99) / 9 = 990/9 + 99/9 = 110 + 11 = 121.

2. 45; 657; 54; 702 либо 792; 855; 2430; 7380 либо 1389; 20907.

3. 64 200 = 2 * 2 * 2 * 3 * 5 * 5 * 107;

288= 2 * 2 * 2 * 2 * 2 * 3 * 3;

256 = 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2;

333 = 3 * 3 * 37;

346 = 2 * 173;

512 = 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2;

8100 =2 * 2 * 3 * 3 * 3 * 3 * 5 * 5;

4096 = 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2;

2500 = 2 * 2 * 5 * 5 * 5 * 5;

888 = 2 * 2 * 2 * 3 * 37;

2525 = 5 * 5 * 101.

НОД (24, 48) = 24; НОД (256, 32) = 32; НОД (62, 31) = 31; НОД (45, 15) = 15; НОД (132, 11) = 11; НОД (21, 63) = 21.