Mathematics, 15.12.2020 18:50 miriammayo12345
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
Answers: 1
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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 t...
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