<span>6 684:6+5 339 -3*289 = 5586
1) 6684 : 6 = 1114
2) 3*289 = 867
3) 1114 + 5339 = 6453
4) 6453 - 867 = 5586
</span><span>1890*3650 - 9312:388+999 = 6899475
1) 1890 * 3650 = </span>6898500
2) 9312 : 388 = 24
3) 6898500 - 24 = 6898476
4) 6898476 + 999 = 6899475
<span> 2) |n|-6=10,3
</span><span><span>|n|=10,3+6
</span> </span><span><span>|n|=16,3
n=16,3 или n =-16,3
</span>4) 2,6|y|-4,6=3,2</span>
<span> 2,6|y|=3,2+4,6
</span><span><span>2,6|y|=7,8
|y|=3
y=3 или y=-3
</span> 6) 3,4|n|+0,45=3</span>
3,4|n|=3-0,45
<span> 3,4|n|=2,55
|n|=0,75
n=0,75 или n=-0,75
</span>
Хватит
580/4=145. -1 пара
2320/145=16 пар