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This is 6th grade work there will be more questions on this but i needed help on this

This is 6th grade work there will be more questions on this but i needed help on this-example-1
User DrRobertz
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2 Answers

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His awnswers true so ummmmmmmmm yeah
User David Hofmann
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6 votes

Answer:

Explanation:

X + (X + 4) + (X - 7) = 54

3X - 3 = 54

3X - 3 + 3 = 54 + 3

3X = 57

3X / 3 = 57 / 3

X = 19

Y = (19 + 4) = 23

Z = (19 - 7) = 12

Sam's age = 19

Dana's age = 23

Alex's age = 12

User BigD
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