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zhmail2
@zhmail2
July 2022
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Решите уравнение:
7/12х-0,5=1,25
5/6х-4,15=2,1
2,7+2,9у=4,3
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nKrynka
Решение
1) 7/12х - 0,5 = 1,25
(7/12)x = 1/25 + 0,5
(7/12)x = 0,54
x = (0,54*12)/7
x = 162/175
2) (5/6)х - 4,15 = 2,1
(5/6)x = 2,1 + 4,15
(5/6)x = 6,25
x = 5/(6*6,25)
x = 1/(6*1,25)
x = 1/7,5
x = 2/15
3) 2,7 + 2,9у = 4,3
2,9y = 4,3 - 2,7
2,9y = 1,6
y = 16/29
11 votes
Thanks 20
zhmail2
спасибо)
asya2205
о, спасибо! огрмоное)
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Answers & Comments
1) 7/12х - 0,5 = 1,25
(7/12)x = 1/25 + 0,5
(7/12)x = 0,54
x = (0,54*12)/7
x = 162/175
2) (5/6)х - 4,15 = 2,1
(5/6)x = 2,1 + 4,15
(5/6)x = 6,25
x = 5/(6*6,25)
x = 1/(6*1,25)
x = 1/7,5
x = 2/15
3) 2,7 + 2,9у = 4,3
2,9y = 4,3 - 2,7
2,9y = 1,6
y = 16/29