Question

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Mr. McGill is solving the following problem: 42x=163. Mr. McGill set 2x=3 and got x=32 as his answer. Tell the mistake Mr. McGill made and tell the correct answer.

Answer 1

Hmmmm. Mr. McGill seems a little lost.

At first, I thought he might have divided both sides by 21 (to get 2x on the left), but look what happens on the right side of the equation!

`42x=163\\\\2x=54\,\, 1/3` (not 3, for sure)

I think Mr. McGill needs to take the class you're in!