Mary is 21 years old. Her age is 9 years more than 3 times Henry’s age. Which equation can be used to determine x, Henry’s age in years? HELP ASAP PLEASE A: 3x + 9 = 21 B: 21 + x = 3(9) C: 9 + 21 = 3x

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asked Mar 7, 2021 28.8k views

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Mary is 21 years old. Her age is 9 years more than 3 times Henry’s age. Which equation can be used to determine x, Henry’s age in years?

HELP ASAP PLEASE

A: 3x + 9 = 21
B: 21 + x = 3(9)
C: 9 + 21 = 3x
D: x + 9 = 21

Mathematics
middle-school

Geovani Martinez asked

by Geovani Martinez

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2 Answers

5 votes

Answer:

21 = 9+3x or A

Explanation:

the answer is a :)

Smilexu answered Mar 9, 2021

by Smilexu

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1 vote

Answer:

i think its a

Explanation:

Koushik Mondal answered Mar 11, 2021

by Koushik Mondal

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