What is the surface area:use the formula SA=2LW + 2HW + 2LH, L = 15,W = 3,H= 3

Girardo is using the model below to solve the equation . girardo uses the following steps: step 1 add 4 negative x-tiles to both sides step 2 add 1 negative unit tile to both sides step 3 the solution is which step could be adjusted so that gerardo's final step results in a positive x-value? in step 1, he should have added 4 positive x-tiles to both sides. in step 1, he should have added 3 negative x-tiles to both sides. in step 2, he should have added 4 negative unit tiles to both sides. in step 2, he should have added 1 positive unit tile to both sides.

Math each whole number with a rational, exponential expression

Aye asap pls ! markin da brainiest too ! btw da step choices are all add, distribute, divide, n subtract