Answer:
3x=12
Step-by-step explanation:
3 times X with x being 4 making it 12 so X=4 and 3x=12
Answer:
72
Step-by-step explanation:
Answer:

Step-by-step explanation:
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Given:

---------->>>>
Combine like terms.

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Add 12 to both sides.

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Divide both sides by 9.

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Hope this is helpful.
Answer:
$1688.26
interest= $188.26
Step-by-step explanation: