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What are the variables in the expression 7x+4y+1?

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Answer:

X and y are the variables in the expression

Explanation:

Variables are letters that represent an unknown value

For example, x + 4 = 7

In this equation, x is the variable because it is letter representing the unknown value

⇒ In 7x+ 4y+1 , x and y are the variables in the expression

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