David wanted to solve 3(x-7)=5. As a first step, he wrote 3x-21=15. What error did he make? Correct his error and then find the solution?

5 answers

3(x-7)=5

3x - 21 = 5

3x = 21 + 5

x = 26/3

x = 8 2/3
Ok. so the error David make was putting 15 as the answerinstead of keep it as 5 correct?
Right.
Thank you Ms. Sue :))
You're welcome, Patchie. :-)