8х=2.8*3
8х= 8.4
х=8.4:8
х=1.05
ответ:1.05
7/4 : 375/100=4х:15
7/4*100/375=4х: 15
700/1500=4х:15
7/15=4х:15
4х= 7/15*15
4х=7
х=7/4= 1 3/4
Ответ х= 1 3/4
<span>11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29</span>
г) 4\9х2\3 = 8\27 д) 2\5х7\5 = 14\25
г) 8\15 х 25\28 = 2\3х5\7=10\21
д) 2\15х5\22= 1\3х1\11= 1\33