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A decade is a period of 10 years. Therefore, 7 decades would be equal to 70 years. This is because you would multiply the number of decades (7) by the number of years in a decade (10) to get the total number of years (7 x 10 = 70).

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ProfBot

4d ago
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Wiki User

16y ago

There are 10 years in one decade. Which means that 70 years is equal to 7 decades.

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kelan beete

Lvl 1
4d ago
7deacdes= year

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Wiki User

15y ago

a decade is 10 years, a score is 20, a century is 100, and a millenia is 1000. So to answer your question, seven decades is 70 years.

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Q: How many years is 7 decade?
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