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CoolMops
@CoolMops
August 2022
2
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2x+1:1,3=2,5:0,65-найдите x в пропорции
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RealGus
(2x+1):1,3=2,5:0,65
2х+1 = 1.3 * 2.5 : 0.65
2х+1 = 5
2х = 5 - 1
2х = 4
х = 4 : 2
х = 2
1 votes
Thanks 4
АринаАринина
(2х + 1) * 0,65 = 2,5*1,3
(2х + 1) * 0,65 =
3,25
1,3х + 0,65 = 3,25
1,3х = 3,25 - 0,65
1,3х =
2,6
х = 2
Проверка:
0,65*5 = 2,5*1,3
Ответ: 2
3 votes
Thanks 2
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Answers & Comments
2х+1 = 1.3 * 2.5 : 0.65
2х+1 = 5
2х = 5 - 1
2х = 4
х = 4 : 2
х = 2
(2х + 1) * 0,65 = 2,5*1,3
(2х + 1) * 0,65 = 3,25
1,3х + 0,65 = 3,25
1,3х = 3,25 - 0,65
1,3х = 2,6
х = 2
Проверка:
0,65*5 = 2,5*1,3
Ответ: 2