Related Post: (- 3 X 12 21 3 4 X 12 )= 21 X 3 12 2 21 3 12 X 4 21 As A Fraction 3 12 X 4 21 In Simplest Form 12 3 X 5 )= 21 6 X 12 )- 21x 3 2100 X 3 X 12 12 3 4 X 21 Prop 12 3 4 X 21 Propeller