Question

The side of an equilateral triangle is
2
inches
shorter than the side of a
square. The perimeter of the square is 30 inches more than the perimeter
of the triangle. Find the length of a side of the triangle.

Hows the answer 22Inch???

Answer 1

\[4x = 30+3(x-2)\]
\[4x = 30 + 3x -6\]
\[x=24\]

Answer 2

Why not experiment a bit: substitute x=22, and then x=24, into 4x=30+3(x-2). Does this equation turn out to be true in either case?