Question
Peter solved this equation
6 x y = 490 - 4
6 x y = 486
y = 492
Explain his mistake.
6 x y = 490 - 4
6 x y = 486
y = 492
Explain his mistake.
Answers
Ken
He removed the 6 from the 6 times y side and added 6 to the 486 on the other side. He should have divided both sides by 6.