Which could be the first step in solving the equation represented by the model below?
Add 4 positive unit tiles to each side.
Remove 4 unit tiles from each side.
0 Add 6 positive unit tiles to each side.
0 Remove 6 unit tiles from each side.

I'm marking the brainliest and it's 15 points

Ben and cam are scuba diving. ben is 15.815.8 meters below the surface of the water. cam is 4.24.2 meters above ben. what is cam's position relative to the surface of the water? choose 1 choose 1 (choice a) a 11.611.6 meters above the surface of the water (choice b) b 11.611.6 meters below the surface of the water (choice c) c 2020 meters above the surface of the water (choice d) d 20 meters below the surface of the water

Given the equation    = 5, solve for x and identify if it is an extraneous solution