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Ognegrivka
@Ognegrivka
July 2022
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Реши уравнения:
а)х:26=5:13
б)15у\9=2,16\4,8
в)92:23=128:(17+а)
г)3,5\0,25=5целых3\5\b
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ketlin25
Verified answer
А) х : 26 = 5 : 13
х
=
5
26 13
13х = 5*26
13х =130
х = 130 : 13 = 10
б) 15у : 9 = 2,16 : 4,8
15у
=
2,16
9 4,8
15у * 4,8 = 2,16 * 9
72у = 19,44
у = 19,44 : 72 = 0,27
в) 92 : 23 = 128 : (17 + а)
92
=
128
23 17 + а
92 * (17 + а) = 23 * 128
1564 + 92а = 2944
92а = 2944 - 1564
92а = 1380
а = 1380 : 92 = 15
г) 3,5 : 0,25 = 5 ³/₅ : b ( 5 3/5 = 28/5 = 5,6)
3,5
=
5,6
0,25 b
3,5b = 5,6 * 0,25
3,5b = 1.4
b = 1.4 : 3,5 = 0,4
26 votes
Thanks 62
ketlin25
ИСПРАВЛЕНИЕ: а) 26/х = 5/13 13х = 26*5 13х = 130 х = 10
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Answers & Comments
Verified answer
А) х : 26 = 5 : 13х = 5
26 13
13х = 5*26
13х =130
х = 130 : 13 = 10
б) 15у : 9 = 2,16 : 4,8
15у = 2,16
9 4,8
15у * 4,8 = 2,16 * 9
72у = 19,44
у = 19,44 : 72 = 0,27
в) 92 : 23 = 128 : (17 + а)
92 = 128
23 17 + а
92 * (17 + а) = 23 * 128
1564 + 92а = 2944
92а = 2944 - 1564
92а = 1380
а = 1380 : 92 = 15
г) 3,5 : 0,25 = 5 ³/₅ : b ( 5 3/5 = 28/5 = 5,6)
3,5 = 5,6
0,25 b
3,5b = 5,6 * 0,25
3,5b = 1.4
b = 1.4 : 3,5 = 0,4