Answer:

The sum of 12 and 8 is 12 add 8 which is 20. The difference between 12 and 8 is 12 minus 8 which is 4.

Step-by-step explanation:

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• find the sum (65/12)+(8/3)

• LCM of 12 and 3 is 12

• find the difference of (65/12)−(8/3)

• LCM of 12 and 3 is 12