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5 votes
12 + 3y = 21
Expression or Equation:

2 Answers

5 votes

Answer:

equation

Explanation:

12 + 3y = 21

-12. -12

__________

3y = 9

y = 3

User Brian Fleishman
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6 votes
It is an equation because it has an equal sign. Whereas an expression does not have an equal sign.
User Wcyn
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