Identify whether or not the expressions are equivalent and name the property that makes them equivalent(12 + 15) + 20 = 12 +(15 + 20)

The expressions are equivalent because they have the same numbers. It wouldnt matter where the parentheses are there or not they both equal 47. Parentheses is what you add first but since they are the same exact three numbers it wouldnt change the sum.

Step-by-step explanation:

(12+15)+20

(12+15)=27

27+20=47

12+(15+20)

(15+20)=35

35+12=47

since proposition states that a number is greater than 25, if is true then the number must actually be greater than 25.

this implies that all possible options, except 24, can be accepted