The answer is 7/12 because you can convert this into a decimal and also find the reduced number hope this helps
Answer:

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Fourth option is the right answer.
Answer:
Step-by-step explanation:
31 - 12n = 21l Subtract 31 from both sides.
31-31-12n =211-31 Do the subtraction
-12n = 190 Divide by -12
-12n/-12 = 190/-12
n = -15.333333