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7. P pts Write the form of the following argument: If the ston of the digits of 371,487 is divisible by 3 , then 371,487 is divisible by 3 . The sum of the digits of 371,487 is divisible by 3 . Therefore, 371,487 is divisible by 3 . Is the argument valid or invalid? Justify your argument by identifying the form by name. 8. If pts] Write the form of the following argument: If Jules solved this problem correctly, then Jules obtained the answer 2. Jules obtained the answer 2. Therefore, Jules solved this problem correctly. Is the argument valid or invalid? Justify your argument by identifying the form by name