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TIMOCHSHUK
@TIMOCHSHUK
July 2022
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Математика 5 класс. Решить уравнения
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1)
a/0.6 = 17/1.2
Приведем к общему знаменателю:
2a/1.2 = 17/1.2
Домножим на 1.2:
2a = 17, отсюда а = 17/2 = 8.5
2)
(7-y)/6 = 5/9
Приведем к общему знаменателю:
9*(7-y)/(6*9)= 7*5/(6*9)
(63 - 9y)/54 = 30/54
Домножим на 54:
63-9у = 30
-9у = -33
у = 33/9
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Answers & Comments
a/0.6 = 17/1.2
Приведем к общему знаменателю:
2a/1.2 = 17/1.2
Домножим на 1.2:
2a = 17, отсюда а = 17/2 = 8.5
2)
(7-y)/6 = 5/9
Приведем к общему знаменателю:
9*(7-y)/(6*9)= 7*5/(6*9)
(63 - 9y)/54 = 30/54
Домножим на 54:
63-9у = 30
-9у = -33
у = 33/9