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Norma-Jean [14]
3 years ago
7

Plz help me answer plz

Mathematics
2 answers:
nikklg [1K]3 years ago
5 0
1 decade(10 years)+8 years=18 years-9years=9 years.
kkurt [141]3 years ago
3 0
1 decade = 10 years

so 1 decade 8 years = 18 years

18 years - 9 years = 9 years

answer is 9 years
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