Question 374425
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Hi,
Rewrite this equation using the Associative Property. 
(2s + 1) + 3 = 16 
2s + (1+3) = 16

solving for s
2s + 4 = 16
2s + 4 - 4 = 16 -4
2s = 12
(2s)/2 = 12/2
s = 6

checking our answer
2*6 + 1 + 3 = 12 + 1 + 3 = 16