The sum of three and a number in mathematics is represented by the algebraic expression '3 + x' or 'x + 3', adhering to the commutative property of addition.
Step-by-step explanation:
The phrase 'the sum of three and a number' refers to an expression in mathematics where you add the number three to any given number. To represent this in algebraic terms, you can use a variable for the unknown number. Let's represent the unknown number with the variable 'x'. Therefore, the algebraic expression would be '3 + x' or 'x + 3'. Due to the commutative property of addition, which states that A + B = B + A, the order in which we add numbers does not affect the sum.
The probable question can be: What is the sum of three and a number?