Question

4 complete 7upon x equal 4 complete 63 upon 81​

Answer 1

The importance of tides are: They can cause a change in landforms of the Earth. While they can destroy coastlines, they also help in the formation of creeks and inlets. Strong tides help in the building of lower flood plains of rivers.

Answer 2

Answer:

$4 \times 63 = x \times 9. \\ 252 = 9x. \\ x = \frac{252}{ 9} . \\ x = 28.$