Help! How do I complete these magic squares! They're taking me FOREVER!

Question

In magic squares, certain numbers have to add up to a certain sum, and be the same sum diagonal,across,and vertical. (Sorry if I didn't explain well)

Arrange the numbers 2,4,6,8,10,12,14,16, and 18 so that the sums of all rows, columns, and diagonals are 30.

Arrange the numbers 3,6,9,12,15,18,21,24,27 so that the sums of all rows, columns, and diagonals are 45.

Please also tell me how to show my work.
P.S. I tried google, but it was confusing.

THANKS A LOT IN ADVANCE!

Answer 1

Here is a simple 3by3 magic square using the numbers from 1 to 9, all rows and columns and diagonals add up to 15

8 1 6
3 5 7
4 9 2

now arrange 2,4,6,..,18 in the same sequence, it will work

do the same for the other sequence of numbers.

Answer 2

Thank you!