what math property do I choose to get 43+[35+57]

To simplify the expression 43 + [35 + 57], you need to consider the math property that applies to grouping within parentheses first. The property that deals with grouping expressions is called the Associative Property of Addition.

According to the Associative Property of Addition, you can group numbers in any order as long as you stay within the same addition operation. In other words, you can add 35 and 57 first, then add the result to 43 or vice versa.

To apply the Associative Property of Addition to the expression 43 + [35 + 57], you can start by adding the numbers inside the square brackets:

35 + 57 = 92

Now, you can substitute the sum of 35 and 57 (which is 92) into the original expression:

43 + 92

Finally, you can add 43 and 92 to get the final answer:

43 + 92 = 135

Therefore, the simplified form of the expression 43 + [35 + 57] is 135.