X=20+700x x=40:4 x=720+40 x=20+700x:40:4=740 740=740
1500-(1500/1 ×1/3 +1500/1 ×2/5 )=1500 -1100=400 (тг)
Под а BO, OD, DA, AC ,BD, OA, CO. Под б FK, KM, KE, EN, NS, MN , KN, ES, PN, PK, PM.
<span> 490.539:49+2*(18703-736):6=16000
18703-736=17967
2*17967=35934
35934 :6=5989
490 539 :49=10 011
10 011+5989=16000</span>
1) -1<48/50
2) 45>-432/10
3) -5/36<4.8
4) -5/216<0.8
5) 5/3600>-48/1000