Three students perform the science experiment using salt and a beaker the beaker contains 530.2 grams of salt before the experiment started during the experiment each of the three students remove 47.36 grams of salt from the beaker how much salt in grams was left in the beaker at the end of experiment

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.