75 − 24 = 51
51 + 24 = 75
43 + 16<span> = </span><span>59
</span>59 - 16 =43
64 + 35<span> = </span><span>99
</span>99 − 35 = 64
Ответ 1. Просто 2011/2011 будет 1
1.AOD=BOC=23C(ВЕРТ)
AOB=180C-23C=157C(СЕЖНЫЕ AOB И AOD)
AOB-COD=157C(ВЕРТ)
5+3/8= 5 3/8
4 8/9+3=7 8/9
2/5+1 1/5=1 3/5
5 6/11-4/11=1 2/11
7 3/4-5= 2 3/4
3 2/7-2/7= 3
2 5/14+1 3/14= 3 8/14= 3 4/7
5 11/19-3 6/19= 2 5/19
<span>1-3/10=7/10</span>