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sagaeva
@sagaeva
August 2022
1
7
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найти число х из пропорции : дробь 3/х+3 равно дроби 7/15
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nKrynka
Решение
3/(х+3) = 7/15
7*(x + 3) = 3*15
x + 3 = 45/21
x = 15/7 - 3
x = - 3 + 2(1/7)
x = - 6/7
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Answers & Comments
3/(х+3) = 7/15
7*(x + 3) = 3*15
x + 3 = 45/21
x = 15/7 - 3
x = - 3 + 2(1/7)
x = - 6/7