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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 + …

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 + …
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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

asked
User Geovani Martinez
by
8.4k points

2 Answers

5 votes

Answer:

21 = 9+3x or A

Explanation:

the answer is a :)

answered
User Smilexu
by
8.0k points
1 vote

Answer:

i think its a

Explanation:

answered
User Koushik Mondal
by
8.1k points
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