Question

Error Analysis  The solution shown for the equation is incorrect. What is the correct​ solution? What is the​ error?

-5(4-r)=15
-20-5r=15
-5=35
r=-7

Answer 1

Hello!

Answer:


The error in the solution is the sign of our is incorrect. It should be positive.

(r=7) instead of negative (= -7).