Past Piper's house at the end of the road were empty fields. Piper had lots of visitors to her yard. A large brown frog and a
small raccoon came regularly. The frog came every 3 days,
and the raccoon came every 7 days. How many times in six
weeks would Piper see the frog and the raccoon on the same
day?

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.