Work Step by Step
We apply the order of operations: $12 * 9 \div 18 * 64 \div 8 + 7=108\div 18*64\div8+7=6*64\div8+7=384\div8+7=48+7=55$
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.