### Why letters are better than boxes…

This is quite a helpful note from purplemath.com on why we use letters rather than boxes when solving for variables in Algebra: See also this excellent video explanation for use of “x” when solving in Algebra.

March9

This is quite a helpful note from purplemath.com on why we use letters rather than boxes when solving for variables in Algebra: See also this excellent video explanation for use of “x” when solving in Algebra.