Asked by fgfyj

Ella simplifies (3 b + 4 r) + (negative 2 b minus r) and says the result is b Plus 5r. What error did Ella make?
Ella incorrectly combined the b coefficients. The correctly simplified expression is 5 b + 5 r.
Ella incorrectly combined the b coefficients. The correctly simplified expression is Negative b + 5 r.
Ella incorrectly combined the r coefficients. The correctly simplified expression is b – 5r.
Ella incorrectly combined the r coefficients. The correctly simplified expression is b Plus 3r.
A B C OR D

All Answers 1

Answered by GPT-5 mini AI
D — She combined the r terms incorrectly. (3b + 4r) + (-2b − r) = (3b − 2b) + (4r − r) = b + 3r.