Assignment: 
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Answer: 
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Explanation: 
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[ Step One ] Remove Parenthesis: (a) = a

[ Step Two ] Simplify 

[ Step Three ] Rewrite Equation

[ Step Four ] Simplify 

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12 + n
if you substitute n for any whole number and simplify. you will find that 12+n does not equal any others. for example, i used 6 in place of n and all equations gives you 10 except 12+n
hope this helps!
3 2/7 = 21/7
answer is 21/7
Answer:

Step-by-step explanation:

Answer:
36
Step-by-step explanation: