Help me please, I don’t understand

While scuba diving, rajeev dove to a depth of 12.6 feet below the surface of the water and then descended another 8.7 feet. what expression can be used to find rajeev's new position? 12.6 – 8.7 –12.6 – 8.7 –12.6 – (–8.7) 12.6 – (–8.7)

4+(2+x) can you me solve this problem

Iam at home. /: i am playing video games. translate the following statement into symbolic form.