Answer:
The short answer is: yes, the answer to "How do you do?" is "How do you do?" It is also acceptable to reply "I'm fine, and you?" and similar variations. However -- and this is important to the etiquette side of things and not so much the language side -- "how do you do?" is actually not a question!
6 x 2 minus 20 because 6 x 2 is in parenthesis so it comes first
The answer to (7+x)=7x is equal to 8x+7.
The area of blue is greater than area of pink.
I’m not really sure. Stay safe out there