Simplifying+Expressions

__**Simplifying Expressions**__
by: Charles

__21a+3b-9c__ 1) Break the top expression into 2 separate division expressions that are still being subtracted 3

__21a__ + __3b -__ __9c__ 2) Simplify using division 3 3 3

7a + b - 3c

__**Cancellation Method**__
by: A.J.

5(3+x)+5(1-4x) 5(3+x)+x(1-4x)5 15+5x+5-20x -5x -5x 15+ +5 +15x -5 -5 +10 +15x -15x -15x x=-1.5