On The Importance Of Factorising

Without it, even linear equations become extremely difficult to re-arrange.

Take 6xy + 3x - 2y = 7

Re-arrange this for x.

MOVE the non x bit.

6xy + 3x = 7- 2y.

SPOT the common factor

x(6y + 3) = 7 - 2y.

DIVIDE by (6y+3)

x = 7-2y
       ----
       6y+3

PIECE of the proverbial.