To find the length of the side of a square when the area is known, find the square root of the area:
Side length = √729
Side Length = 27 feet.
A way to add fractions that always works is to multiply each numerator by the denominator of the other, then express the sum of products over the product of the denominators.

Here, you have
The sum is -1 1/12
Answer:

Step-by-step explanation:
3p + 4r = q
3p = q - 4r

The misused form but it is really the mean the arithmetical form of mean