Question

Greg has nickels and pennies in his pocket. The number of pennies is seven less than three the number of nickels. Let n represent the number of nickels. Write an expression for the number of pennies.

Short answer

The expression for the number of pennies is$3n-7$.

Step-by-step solution

Step 1. Given Information

The given phrase is "the number of pennies is seven less than three the number of nickels" and n represent the number of nickels.

Step 2. Identify the operation for the phrase. 

The word "less than" denoted "the operation of subtraction" and it means "subtracted from."

Step 3. Write the algebraic expression for the given phrase. 

• The expression for the phrase "three the number of nickels" will be 3n.
• The desired value can be calculated by determining the algebraic expression for the phrase "seven subtracted from 3n.

$3n-7$

Step 4. Conclusion

The desired expression is$3n-7$.