<span>To determine how many students were at Marita's school last year with the provided information, the equation would be 1,350 = 90%(x). Another way to write it is 0.9x = 1,350. Divide both sides by 0.9, and the answer is 1,500. There were 1,500 students at the school last year.</span>
Commutative property states that order does not matter. Multiplication and addition are commutative. Related Links: Properties. Associative, Distributive and commutative properties.