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Use the Associative Property to find the value of the variable. (9 + 11) + 15 = 9 + (11 + b )

User Anitteb
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2 Answers

3 votes

Answer: b=15

Explanation:(9+11)+15=9+(11+b)

Add 9 and 11 to get 20.

20+15=9+11+b

Add 20 and 15 to get 35.

35=9+11+b

Add 9 and 11 to get 20.

35=20+b

Swap sides so that all variable terms are on the left hand side.

20+b=35

Subtract 20 from both sides.

b=35−20

Subtract 20 from 35 to get 15.

b=15

User Kuldeep Dubey
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5 votes

the answer is c (15)

User Shaeldon
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