Proof - Opposite Sides of Parallelogram Congruent | Quadrilaterals. Rhombus Diagonals | Quadrilaterals. The Distributive Property 2 | The distributive property. Commutative Law of Multiplication | Arithmetic properties. Commutative Law of Multiplication | Arithmetic properties. Order of Operations | Order of operations. Solving Ax+B = C | Equation examples for beginners. Simple Equations | Equation examples for beginners. Algebra: Linear Equations 4 | Old school equations with Sal. Commutative Law of Multiplication | Arithmetic properties. Commutative Law of Addition | Arithmetic properties. Associative Law of Multiplication | Arithmetic properties. Associative Law of Addition | Arithmetic properties.