Math Shortcuts - Equation Mnemonics

In equation solving, I emphasize that we always do "things" in pairs
to maintain equality in mathematices.

In equation solving, I emphasize that we need only perform one
opposite to "get rid of" something.

For equation solving when we want to undo something, we use B. S. well
actually double B. S. to determine where to perform the operation the
Back Side of Both Sides of the equation, or the Bottom Side of Both
Sides of the equation.

When you substitute, always substitute as a quantity.

The verb always becomes the equal sign in equations.

Formulas:
A=(pi)r^2   Apple pies r square
A=(pi)r*r     Apple pies r round
C = (pi)d    Cherry pie delight
I = p r t       I "am" p-r-t             pronounced    I am pretty
rt = d          rt are d                   pronounced    retard

The three s's of equation solving:  Substitute, simplify, solve

Source: The Math Forum at Drexel