6*2<span> <36
6*3</span><span> <36
6*4</span><span> <36
6*5 </span><span> <35</span>
8 7/10-(7 4/5-6 1/2)=
8 7/10-1 3/10=
7 2/5
3089 - х= 1596
х=3089-1596
х=1493
1920:х=16
х=1920:16
х=120
X+2/3-x+2/2<=х+2/6
х-х=0
2/3+2/2<=х+2/6
1 2/3-2/6<=х
1 1/3<=х
х/2+х>=3х/4-х-7/8
х/2+х-3х/4+х>=-7/8
2х-х/4>=-7/8
7х/4>=-7/8
7х>=-3 1/2
х>=-1/2