Question

(7 + 11) + 13

Which of the following expressions is equivalent to the expression above?

(13 + 7) × (13 + 11)
(13 + 7) + (13 + 11)
13 × 7 + 13 × 11
7 + (11 + 13)

Answer 1

your question have to add like terms
when you add number
you can add as you want like
2+3+4
2+4 = 6+3 = 9
2+3 = 5+4 = 9
so whatever you add first you gonna get same answer

Answer 2

D. All you're doing is moving the parenthesis and putting it around different numbers. (associative propety of addition)
(7+11)+13
7+(11+13)