Use properties to evaluate the expression.


(19 + 28) + 21

47

68

Anonymous is right.

To evaluate the expression (19 + 28) + 21 using properties, we can follow these steps:

Step 1: Perform the addition inside the parentheses: (19 + 28) = 47.

Step 2: Add the result of step 1 to 21: 47 + 21 = 68.

Therefore, the value of the expression (19 + 28) + 21 is 68.