663:3=221
448:2=224
888:4=222
999:3=333
424:2=212
826:2=413
699:3=233
444:4=111
884:4=221
622:2=311
244:2=122
933:3=311
396:3=132
664:2=332
444:2=222
824:2=412
396:3=132
266:2=133
<span>3 3/7x - (1 3/14x + 8/21x) =
24/7х - 17/14х - 8/21х =
144/42х - 51/42х - 16/42х =
77/42х = 11/6х = 1 5/6х,
при х = 24: 1 5/6 * 24 = 11/6 * 24 = 11 * 4 = 44</span>
1) 1. 7×6-60= 42-60= -18
2. -18 × -76 = 1368
3. -6 × 19 = - 114
4. 1368 : -114= - 12
2) 1. 3,5 × -2 = - 7
2. -7 - -2,8 = -4,2
3. 3,5 × 2,8 = 9,8
4. - 4.2 : 9,8 = - 0,42
3. 20-60 = -40
-40×-63= 3780
20×-9= - 180
3780:-180= 21
4. 6,5-6=0,5
0,5×9= 4,5
-3×1,5= -4,5
4,5:-4,5= -1