Question

Ella simplifies 3b+4Runner+(−2b−r) and says the result is b+5t. What error did Ella make?

A. Incorrect application of the distributive property

B. Incorrect combination of like terms

C. Misinterpretation of the variable symbols

D. Misplacement of parentheses

Answer 1

The error made by Ella is the misplacement of parentheses.

Step-by-step explanation:

Ella made the error of misplacing parentheses. To simplify the expression 3b+4Runner+(−2b−r), we need to distribute the positive and negative signs to each term within the parentheses. This yields 3b + 4Runner - 2b - r. Combining like terms, we get b + 4Runner - r, which is not the same as b + 5t. Therefore, the correct answer is D. Misplacement of parentheses.