Erin writes the expression “ $6$ less than double a number.”

Write an algebraic expression that is equivalent to Erin’s expression.
Write a second algebraic expression that is different from, but equivalent to, your first expression.
Respond in the space provided.

For this case we must algebraically rewrite the given expression. So:

x: It is the variable that represents an unknown number

"double a number" is represented as:

"6 less than double a number" is represented as:

So, the final expression is:

If we want to rewrite the expression in an equivalent way, we take common factor 2:

Asnwer:

Equivalent expression:

a² + b²= c²

24² + 7² = c²

c= 25

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