SOLUTION: how would you write three equivalent expressions for (7+s)+t using the commutative and associative properties?

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Question 27024: how would you write three equivalent expressions for (7+s)+t using the commutative and associative properties?
Found 3 solutions by longjonsilver, venugopalramana, scoop:
Answer by longjonsilver(2297) About Me  (Show Source):
You can put this solution on YOUR website!
7+(s+t)
(7+t)+s
(s+t)+7

jon.

Answer by venugopalramana(3286) About Me  (Show Source):
You can put this solution on YOUR website!
how would you write three equivalent expressions for (7+s)+t using the commutative and associative properties?
COMMUTATIVE
T+(7+S)..OR....(S+7)+T...OR......T+(S+7)...
ASSOCIATIVE
7+(S+T).

Answer by scoop(27) About Me  (Show Source):
You can put this solution on YOUR website!
(7+t)+s
(t+s)+7
(s+7)+t
In addition with the commutative property you can move any number anywhere!